diff --git a/src/app/app-routing.module.ts b/src/app/app-routing.module.ts
index 4a0fcd0..dfa38f6 100644
--- a/src/app/app-routing.module.ts
+++ b/src/app/app-routing.module.ts
@@ -11,12 +11,14 @@ import {UsersComponent} from './users/users.component';
 import {ChangelogComponent} from './changelog/changelog.component';
 import {DocumentationDatabaseComponent} from './documentation-database/documentation-database.component';
 import {PredictionComponent} from './prediction/prediction.component';
+import {ModelTemplatesComponent} from './model-templates/model-templates.component';
 
 
 const routes: Routes = [
   {path: '', component: HomeComponent},
   {path: 'home', component: HomeComponent},
   {path: 'prediction', component: PredictionComponent},
+  {path: 'models', component: ModelTemplatesComponent},
   {path: 'samples', component: SamplesComponent, canActivate: [LoginService]},
   {path: 'samples/new', component: SampleComponent, canActivate: [LoginService]},
   {path: 'samples/edit/:id', component: SampleComponent, canActivate: [LoginService]},
diff --git a/src/app/app.component.html b/src/app/app.component.html
index 29b9944..e32372c 100644
--- a/src/app/app.component.html
+++ b/src/app/app.component.html
@@ -1,7 +1,8 @@
 <rb-full-header id="top">
   <nav *rbMainNavItems>
     <a routerLink="/home" routerLinkActive="active" rbLoadingLink>Home</a>
-    <a routerLink="/prediction" routerLinkActive="active" rbLoadingLink *ngIf="login.isLevel.admin">Prediction</a>
+    <a routerLink="/prediction" routerLinkActive="active" rbLoadingLink *ngIf="login.isLevel.dev">Prediction</a>
+    <a routerLink="/models" routerLinkActive="active" rbLoadingLink *ngIf="login.isLevel.dev">Models</a>
     <a routerLink="/samples" routerLinkActive="active" rbLoadingLink *ngIf="login.isLoggedIn">Samples</a>
     <a routerLink="/templates" routerLinkActive="active" rbLoadingLink *ngIf="login.isLevel.dev">
       Templates
@@ -18,6 +19,10 @@
     </nav>
   </ng-container>
 
+  <nav *rbMetaNavItems>
+    <span class="rb-ic rb-ic-question-frame clickable space-above" (click)="help()"></span>
+  </nav>
+
   <ng-container *ngIf="login.isLoggedIn">
     <nav *rbActionNavItems>
       <a href="javascript:"  [rbPopover]="userPopover" [anchor]="popoverAnchor">
@@ -55,3 +60,12 @@
     <rb-icon-button icon="up" mode="primary" iconOnly (click)="toTheTop()"></rb-icon-button>
   </div>
 </div>
+
+<rb-footer-nav>
+  <span class="copyright">
+    CR/APS1 and CR/ANA1 2020
+  </span>
+  <nav>
+    <a [href]="'mailto:' + d.contact">Contact</a>
+  </nav>
+</rb-footer-nav>
diff --git a/src/app/app.component.scss b/src/app/app.component.scss
index cbf78c0..2b6f0c7 100644
--- a/src/app/app.component.scss
+++ b/src/app/app.component.scss
@@ -16,6 +16,7 @@
 
 .to-the-top-container {
   position: relative;
+  overflow: hidden;
 }
 
 .to-the-top {
diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 9ec49ac..f8836e5 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -1,6 +1,9 @@
 import {Component, isDevMode, OnInit} from '@angular/core';
 import {LoginService} from './services/login.service';
 import {NavigationStart, Router} from '@angular/router';
+import {ModalService} from '@inst-iot/bosch-angular-ui-components';
+import {HelpComponent} from './help/help.component';
+import {DataService} from './services/data.service';
 
 
 // TODO: get rid of chart.js (+moment.js)
@@ -19,7 +22,9 @@ export class AppComponent implements OnInit{
   constructor(
     public login: LoginService,
     public router: Router,
-    private window: Window
+    private window: Window,
+    private modal: ModalService,
+    public d: DataService
   ) {
     this.devMode = isDevMode();
     this.router.events.subscribe(event => {
@@ -30,7 +35,11 @@ export class AppComponent implements OnInit{
   }
 
   ngOnInit() {
-    this.login.login();
+    this.login.login().then(res => {
+      if (!res) {
+        this.router.navigate(['/']);
+      }
+    });
   }
 
   logout() {
@@ -38,6 +47,10 @@ export class AppComponent implements OnInit{
     this.router.navigate(['/']);
   }
 
+  help() {
+    this.modal.openComponent(HelpComponent);
+  }
+
   bugReportContent() {
     return `mailto:lukas.veit@de.bosch.com?subject=Bug report&body=Thanks for sending the report! Your bug will be (hopefully) fixed soon.
 %0D%0A%0D%0A--- REPORT DATA ---
diff --git a/src/app/app.module.ts b/src/app/app.module.ts
index 44f4513..b3d8a75 100644
--- a/src/app/app.module.ts
+++ b/src/app/app.module.ts
@@ -30,6 +30,8 @@ import { DocumentationDatabaseComponent } from './documentation-database/documen
 import { PredictionComponent } from './prediction/prediction.component';
 import { ServiceWorkerModule } from '@angular/service-worker';
 import { environment } from '../environments/environment';
+import { HelpComponent } from './help/help.component';
+import { ModelTemplatesComponent } from './model-templates/model-templates.component';
 
 @NgModule({
   declarations: [
@@ -50,7 +52,9 @@ import { environment } from '../environments/environment';
     UsersComponent,
     ChangelogComponent,
     DocumentationDatabaseComponent,
-    PredictionComponent
+    PredictionComponent,
+    HelpComponent,
+    ModelTemplatesComponent
   ],
   imports: [
     LocalStorageModule.forRoot({
diff --git a/src/app/help/help.component.html b/src/app/help/help.component.html
new file mode 100644
index 0000000..80ac352
--- /dev/null
+++ b/src/app/help/help.component.html
@@ -0,0 +1,14 @@
+<h3>Help</h3>
+
+<ng-container [ngSwitch]="route">
+ <p *ngSwitchCase="'/'">Please log in for further access. If you do not have an account yet, please contact
+   <a [href]="'mailto:' + d.contact">{{d.contact}}</a>.
+ </p>
+ <p *ngSwitchCase="'/home'">Please log in for further access. If you do not have an account yet, please contact
+   <a [href]="'mailto:' + d.contact">{{d.contact}}</a>.
+ </p>
+ <p *ngSwitchDefault>
+   Sadly, currently there is no help available for this page. Please contact
+   <a [href]="'mailto:' + d.contact">{{d.contact}}</a> for further questions.
+ </p>
+</ng-container>
diff --git a/src/app/help/help.component.scss b/src/app/help/help.component.scss
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/help/help.component.spec.ts b/src/app/help/help.component.spec.ts
new file mode 100644
index 0000000..191ecee
--- /dev/null
+++ b/src/app/help/help.component.spec.ts
@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { HelpComponent } from './help.component';
+
+describe('HelpComponent', () => {
+  let component: HelpComponent;
+  let fixture: ComponentFixture<HelpComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ HelpComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(HelpComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/help/help.component.ts b/src/app/help/help.component.ts
new file mode 100644
index 0000000..371000d
--- /dev/null
+++ b/src/app/help/help.component.ts
@@ -0,0 +1,24 @@
+import { Component, OnInit } from '@angular/core';
+import {Router} from '@angular/router';
+import {DataService} from '../services/data.service';
+
+@Component({
+  selector: 'app-help',
+  templateUrl: './help.component.html',
+  styleUrls: ['./help.component.scss']
+})
+export class HelpComponent implements OnInit {
+
+  route = '';
+
+  constructor(
+    private router: Router,
+    public d: DataService
+  ) { }
+
+  ngOnInit(): void {
+    this.route = this.router.url.replace(/\/[0-9a-f]{24}/, '');  // remove ids
+    console.log(this.route);
+  }
+
+}
diff --git a/src/app/model-templates/model-templates.component.html b/src/app/model-templates/model-templates.component.html
new file mode 100644
index 0000000..200b1ba
--- /dev/null
+++ b/src/app/model-templates/model-templates.component.html
@@ -0,0 +1,65 @@
+<h2>Models</h2>
+
+<rb-icon-button icon="add" mode="primary" (click)="newModel = !newModel" class="space-below">New model</rb-icon-button>
+
+<form *ngIf="newModel" #modelForm="ngForm">
+  <rb-form-input name="group" label="group" appValidate="string" required [(ngModel)]="modelGroup" #groupInput="ngModel"
+                 [rbFormInputAutocomplete]="autocomplete.bind(this, groups)"
+                 [rbDebounceTime]="0" [rbInitialOpen]="true">
+    <ng-template rbFormValidationMessage="failure">{{groupInput.errors.failure}}</ng-template>
+    <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+  </rb-form-input>
+  <rb-form-input name="name" label="name" appValidate="string" required [(ngModel)]="model.name" #nameInput="ngModel">
+    <ng-template rbFormValidationMessage="failure">{{nameInput.errors.failure}}</ng-template>
+    <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+  </rb-form-input>
+  <rb-form-input name="label" label="label" appValidate="string" [(ngModel)]="model.label" #labelInput="ngModel">
+    <ng-template rbFormValidationMessage="failure">{{labelInput.errors.failure}}</ng-template>
+  </rb-form-input>
+  <rb-form-input name="url" label="URL" appValidate="url" required [(ngModel)]="model.url" #urlInput="ngModel">
+    <ng-template rbFormValidationMessage="failure">{{urlInput.errors.failure}}</ng-template>
+    <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+  </rb-form-input>
+
+  <rb-icon-button icon="save" mode="primary" type="submit" [disabled]="!modelForm.form.valid" (click)="saveModel()">
+    Save model
+  </rb-icon-button>
+</form>
+
+<rb-table class="space-above">
+  <tr>
+    <th>Name</th>
+    <th>Label</th>
+    <th>URL</th>
+    <th></th>
+    <th></th>
+  </tr>
+
+  <ng-container *ngFor="let group of d.arr.modelGroups">
+    <tr><th>{{group.group}}</th><th></th><th></th><th></th><th></th></tr>
+    <tr *ngFor="let modelItem of group.models">
+      <td>{{modelItem.name}}</td>
+      <td>{{modelItem.label}}</td>
+      <td>{{modelItem.url}}</td>
+      <td>
+        <span class="rb-ic rb-ic-edit clickable"
+              (click)="modelGroup = group.group;
+                       oldModelGroup = group.group;
+                       oldModelName = modelItem.name;
+                       model = modelItem;
+                       newModel = true;">
+        </span>
+      </td>
+      <td>
+        <span class="rb-ic rb-ic-delete clickable"
+              (click)="deleteModel(group.group, modelItem.name, modalDeleteConfirm)"></span>
+      </td>
+    </tr>
+  </ng-container>
+</rb-table>
+
+<ng-template #modalDeleteConfirm>
+  <rb-alert alertTitle="Are you sure?" type="danger" okBtnLabel="Delete model" cancelBtnLabel="Cancel">
+    Do you really want to delete this model?
+  </rb-alert>
+</ng-template>
diff --git a/src/app/model-templates/model-templates.component.scss b/src/app/model-templates/model-templates.component.scss
new file mode 100644
index 0000000..e69de29
diff --git a/src/app/model-templates/model-templates.component.spec.ts b/src/app/model-templates/model-templates.component.spec.ts
new file mode 100644
index 0000000..f6dafa2
--- /dev/null
+++ b/src/app/model-templates/model-templates.component.spec.ts
@@ -0,0 +1,25 @@
+import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ModelTemplatesComponent } from './model-templates.component';
+
+describe('ModelTemplatesComponent', () => {
+  let component: ModelTemplatesComponent;
+  let fixture: ComponentFixture<ModelTemplatesComponent>;
+
+  beforeEach(async(() => {
+    TestBed.configureTestingModule({
+      declarations: [ ModelTemplatesComponent ]
+    })
+    .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ModelTemplatesComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});
diff --git a/src/app/model-templates/model-templates.component.ts b/src/app/model-templates/model-templates.component.ts
new file mode 100644
index 0000000..c2a151c
--- /dev/null
+++ b/src/app/model-templates/model-templates.component.ts
@@ -0,0 +1,74 @@
+import { Component, OnInit } from '@angular/core';
+import {DataService} from '../services/data.service';
+import {ModelItemModel} from '../models/model-item.model';
+import {ApiService} from '../services/api.service';
+import {AutocompleteService} from '../services/autocomplete.service';
+import {ModalService} from '@inst-iot/bosch-angular-ui-components';
+
+@Component({
+  selector: 'app-model-templates',
+  templateUrl: './model-templates.component.html',
+  styleUrls: ['./model-templates.component.scss']
+})
+export class ModelTemplatesComponent implements OnInit {
+
+  newModel = false;
+  modelGroup = '';
+  oldModelGroup = '';
+  oldModelName = '';
+  model = new ModelItemModel().models[0];
+  groups = [];
+
+  constructor(
+    private api: ApiService,
+    public autocomplete: AutocompleteService,
+    public d: DataService,
+    private modal: ModalService
+  ) { }
+
+  ngOnInit(): void {
+    this.loadGroups();
+  }
+
+  loadGroups() {
+    delete this.d.arr.modelGroups;
+    this.d.load('modelGroups', () => {
+      this.groups = this.d.arr.modelGroups.map(e => e.group);
+    });
+  }
+
+  saveModel() {
+    if (this.modelGroup !== this.oldModelGroup) {  // group was changed, delete model in old group
+      this.deleteModel(this.oldModelGroup, this.oldModelName);
+    }
+    this.api.post('/model/' + this.modelGroup, this.model, () => {
+      this.newModel = false;
+      this.loadGroups();
+      this.modelGroup = '';
+      this.oldModelGroup = '';
+      this.oldModelName = '';
+      this.model = new ModelItemModel().models[0];
+      this.groups = this.d.arr.modelGroups.map(e => e.group);
+    });
+  }
+
+  deleteModel(group, name, modal = null) {
+    new Promise(resolve => {
+      if (modal) {
+        this.modal.open(modal).then(result => {
+          resolve(result);
+        });
+      }
+      else {
+        resolve(true);
+      }
+    }).then(res => {
+      if (res) {
+        this.api.delete(`/model/${group}/${name}`, () => {
+          this.loadGroups();
+        });
+      }
+    });
+  }
+
+}
diff --git a/src/app/models/measurement.model.ts b/src/app/models/measurement.model.ts
index 8002bc5..0b8ed3d 100644
--- a/src/app/models/measurement.model.ts
+++ b/src/app/models/measurement.model.ts
@@ -8,6 +8,7 @@ export class MeasurementModel extends BaseModel {
   sample_id: IdModel = null;
   measurement_template: IdModel;
   values: {[prop: string]: any} = {};
+  status = '';
 
   constructor(measurementTemplate: IdModel = null) {
     super();
diff --git a/src/app/models/model-item.model.spec.ts b/src/app/models/model-item.model.spec.ts
new file mode 100644
index 0000000..d57897f
--- /dev/null
+++ b/src/app/models/model-item.model.spec.ts
@@ -0,0 +1,7 @@
+import { ModelItemModel } from './model-item.model';
+
+describe('ModelItemModel', () => {
+  it('should create an instance', () => {
+    expect(new ModelItemModel()).toBeTruthy();
+  });
+});
diff --git a/src/app/models/model-item.model.ts b/src/app/models/model-item.model.ts
new file mode 100644
index 0000000..4c3c5d7
--- /dev/null
+++ b/src/app/models/model-item.model.ts
@@ -0,0 +1,10 @@
+import {BaseModel} from './base.model';
+
+export class ModelItemModel extends BaseModel {
+  group = '';
+  models = [{
+    name: '',
+    url: '',
+    label: ''
+  }];
+}
diff --git a/src/app/models/sample.model.ts b/src/app/models/sample.model.ts
index 9172d3a..e1d3c86 100644
--- a/src/app/models/sample.model.ts
+++ b/src/app/models/sample.model.ts
@@ -17,7 +17,7 @@ export class SampleModel extends BaseModel {
   measurements: MeasurementModel[] = [];
   note_id: IdModel = null;
   user_id: IdModel = null;
-  validate = false;
+  selected = false;
   notes: {
     comment: string,
     sample_references: {sample_id: IdModel, relation: string}[],
@@ -42,7 +42,16 @@ export class SampleModel extends BaseModel {
   }
 
   sendFormat() {
-    return pick(this.conditionTemplateCheck(), ['color', 'type', 'batch', 'condition', 'material_id', 'notes']);
+    const tmp = pick(this.conditionTemplateCheck(), ['color', 'type', 'batch', 'condition', 'material_id', 'notes']);
+    Object.keys(tmp).forEach(key => {
+      if (tmp[key] === undefined) {
+        delete tmp[key];
+      }
+    });
+    if (this.material && this.material.name === undefined) {
+      delete tmp.material_id;
+    }
+    return tmp;
   }
 
   private conditionTemplateCheck() {
diff --git a/src/app/models/template.model.ts b/src/app/models/template.model.ts
index 94be281..23cbbe6 100644
--- a/src/app/models/template.model.ts
+++ b/src/app/models/template.model.ts
@@ -7,10 +7,4 @@ export class TemplateModel extends BaseModel {
   version = 0;
   first_id: IdModel = null;
   parameters: {name: string, range: {[prop: string]: any}, rangeString?: string}[] = [];
-
-  deserialize(input: any): this {
-    Object.assign(this, input);
-
-    return this;
-  }
 }
diff --git a/src/app/prediction/prediction.component.html b/src/app/prediction/prediction.component.html
index faf18e7..6adb6f5 100644
--- a/src/app/prediction/prediction.component.html
+++ b/src/app/prediction/prediction.component.html
@@ -1,12 +1,57 @@
 <h2>Prediction</h2>
 
-<h4 *ngIf="result !== '' || loading" [@inOut]>
-  Result: {{result}}<rb-loading-spinner *ngIf="loading"></rb-loading-spinner>
-</h4>
+<rb-tab-panel (tabChanged)="groupChange($event)">
+  <ng-container *ngFor="let group of d.arr.modelGroups; index as i">
+    <div *rbTabPanelItem="group.group; id: i"></div>
+  </ng-container>
+</rb-tab-panel>
 
-<rb-form-file name="spectrum-upload" label="spectrum file" maxSize="10000000" class="space-below"
-              (ngModelChange)="fileToArray($event)" placeholder="Select file or drag and drop" dragDrop ngModel>
-</rb-form-file>
+<rb-form-select label="Model" (change)="result = undefined" [(ngModel)]="activeModelIndex">
+  <option *ngFor="let model of activeGroup.models; index as i" [value]="i">{{model.name}}</option>
+</rb-form-select>
+
+<div *ngIf="result" class="result" [@inOut]>
+  <ng-container *ngIf="multipleSamples; else singleSampleResult">
+    <h4 *ngFor="let prediction of result.predictions; index as i">
+      {{spectrumNames[i]}}: {{prediction}}&nbsp;{{activeGroup.models[activeModelIndex].label}}
+    </h4>
+  </ng-container>
+  <ng-template #singleSampleResult>
+    <h4>
+      Average result: {{result.meanPrediction}}&nbsp;{{activeGroup.models[activeModelIndex].label}},
+      standard deviation: {{result.std}}
+    </h4>
+    <a href="javascript:" class="rb-details-toggle" rbDetailsToggle #triggerDetails="rbDetailsToggle">Details</a>
+    <div *ngIf="triggerDetails.open" class="space-below">
+      <p *ngFor="let prediction of result.predictions; index as i">
+        {{spectrumNames[i]}}: {{prediction}}&nbsp;{{activeGroup.models[activeModelIndex].label}}
+      </p>
+    </div>
+  </ng-template>
+</div>
+
+<div class="file-input space-below">
+  <rb-form-file name="spectrum-upload" label="spectrum file" maxSize="10000000" class="space-below" multiple
+                (ngModelChange)="fileToArray($event)" placeholder="Select file or drag and drop" dragDrop ngModel>
+  </rb-form-file>
+
+  <rb-loading-spinner *ngIf="loading; else predictButton"></rb-loading-spinner>
+  <ng-template #predictButton>
+    <rb-icon-button icon="forward-right" mode="primary" *ngIf="spectrumNames.length; else placeholder"
+                    (click)="loadPrediction()">
+      Predict
+    </rb-icon-button>
+    <ng-template #placeholder><div></div></ng-template>
+  </ng-template>
+
+  <div>
+    Prediction of:
+    <rb-form-radio name="multiple-samples" label="Single sample" [(ngModel)]="multipleSamples" [value]="false">
+    </rb-form-radio>
+    <rb-form-radio name="multiple-samples" label="Multiple samples" [(ngModel)]="multipleSamples" [value]="true">
+    </rb-form-radio>
+  </div>
+</div>
 
 <div class="dpt-chart">
   <canvas baseChart
diff --git a/src/app/prediction/prediction.component.scss b/src/app/prediction/prediction.component.scss
index dbe9c15..18b1f5b 100644
--- a/src/app/prediction/prediction.component.scss
+++ b/src/app/prediction/prediction.component.scss
@@ -2,3 +2,17 @@
   max-width: 800px;
   margin: 0 auto;
 }
+
+.file-input {
+  display: grid;
+  grid-template-columns: 1fr auto;
+  grid-column-gap: 1rem;
+}
+
+.result {
+  margin: 30px 0;
+
+  h4 {
+    margin-bottom: 1rem;
+  }
+}
diff --git a/src/app/prediction/prediction.component.ts b/src/app/prediction/prediction.component.ts
index 105b48b..0d4c3df 100644
--- a/src/app/prediction/prediction.component.ts
+++ b/src/app/prediction/prediction.component.ts
@@ -2,6 +2,15 @@ import { Component, OnInit } from '@angular/core';
 import {ChartOptions} from 'chart.js';
 import {ApiService} from '../services/api.service';
 import {animate, style, transition, trigger} from '@angular/animations';
+import cloneDeep from 'lodash/cloneDeep';
+import {DataService} from '../services/data.service';
+import {ModelItemModel} from '../models/model-item.model';
+
+interface PredictionResult {
+  meanPrediction: string;
+  std: string;
+  predictions: string[];
+}
 
 @Component({
   selector: 'app-prediction',
@@ -24,11 +33,16 @@ import {animate, style, transition, trigger} from '@angular/animations';
 })
 export class PredictionComponent implements OnInit {
 
-  readonly predictionUrl = 'https://definma-model-test.apps.de1.bosch-iot-cloud.com/predict';
-  result = '';
+  result: PredictionResult;
   loading = false;
+  activeGroup: ModelItemModel = new ModelItemModel();
+  activeModelIndex = 0;
+  multipleSamples = false;  // if true, spectra belong to different samples, otherwise multiple spectra from the same sample are given
+  spectrumNames: string[] = [];
   spectrum: string[][] = [[]];
-  chart = [{
+  flattenedSpectra = [];
+  chart = [];
+  readonly chartInit = {
     data: [],
     label: 'Spectrum',
     showLine: true,
@@ -36,7 +50,7 @@ export class PredictionComponent implements OnInit {
     pointRadius: 0,
     borderColor: '#00a8b0',
     borderWidth: 2
-  }];
+  };
   readonly chartOptions: ChartOptions = {
     scales: {
       xAxes: [{ticks: {min: 400, max: 4000, stepSize: 400, reverse: true}}],
@@ -50,25 +64,53 @@ export class PredictionComponent implements OnInit {
   };
 
   constructor(
-    private api: ApiService
-  ) { }
+    private api: ApiService,
+    public d: DataService
+  ) {
+    this.chart[0] = cloneDeep(this.chartInit);
+  }
 
   ngOnInit(): void {
+    this.d.load('modelGroups', () => {
+      this.activeGroup = this.d.arr.modelGroups[0];
+    });
   }
 
   fileToArray(files) {
-    const fileReader = new FileReader();
-    fileReader.onload = () => {
-      this.spectrum = fileReader.result.toString().split('\r\n').map(e => e.split(','));
-      this.loading = true;
-      this.api.post<{result: string}>(this.predictionUrl, this.spectrum, data => {
-        this.result = data.result;
-        this.loading = false;
-      });
-      this.chart[0].data = this.spectrum.map(e => ({x: parseFloat(e[0]), y: parseFloat(e[1])}));
-      console.log(this.chart);
-    };
-    fileReader.readAsText(files[0]);
+    this.loading = true;
+    this.flattenedSpectra = [];
+    this.chart = [];
+    let load = files.length;
+    this.spectrumNames = files.map(e => e.name);
+    for (const i in files) {
+      if (files.hasOwnProperty(i)) {
+        const fileReader = new FileReader();
+        fileReader.onload = () => {
+          this.spectrum = fileReader.result.toString().split('\r\n').map(e => e.split(',').map(el => parseFloat(el))) as any;
+          this.flattenedSpectra[i] = {labels: this.spectrum.map(e => e[0]), values: this.spectrum.map(e => e[1])};
+          this.chart[i] = cloneDeep(this.chartInit);
+          this.chart[i].data = this.spectrum.map(e => ({x: parseFloat(e[0]), y: parseFloat(e[1])}));
+          load --;
+          if (load <= 0) {
+            this.loadPrediction();
+          }
+        };
+        fileReader.readAsText(files[i]);
+      }
+    }
   }
 
+  loadPrediction() {
+    this.loading = true;
+    console.log(this.activeModelIndex);
+    this.api.post<PredictionResult>(this.activeGroup.models[this.activeModelIndex].url, this.flattenedSpectra, data => {
+      this.result = data;
+      this.loading = false;
+    });
+  }
+
+  groupChange(index) {
+    this.activeGroup = this.d.arr.modelGroups[index];
+    this.result = undefined;
+  }
 }
diff --git a/src/app/rb-custom-inputs/rb-array-input/rb-array-input.component.ts b/src/app/rb-custom-inputs/rb-array-input/rb-array-input.component.ts
index f7b7d50..e27d579 100644
--- a/src/app/rb-custom-inputs/rb-array-input/rb-array-input.component.ts
+++ b/src/app/rb-custom-inputs/rb-array-input/rb-array-input.component.ts
@@ -129,13 +129,38 @@ export class RbArrayInputComponent implements ControlValueAccessor, OnInit, Afte
   }
 
   writeValue(obj: any) {  // add empty value on init
-    this.values = obj ? obj : [];
-    if (this.values.length === 0 || this.values[0] !== '') {
-      // add empty last field if pushTemplate is specified
+    if (obj) {
       if (this.pushTemplate !== null) {
-        this.values.push(cloneDeep(this.pushTemplate));
+        this.values = [...obj.filter(e => e[this.pushPath] !== ''), cloneDeep(this.pushTemplate)];
+      }
+      else {
+        this.values = obj;
       }
     }
+    else {
+      if (this.pushTemplate !== null) {
+        this.values = [cloneDeep(this.pushTemplate)];
+      }
+      else {
+        this.values = [''];
+      }
+    }
+    // this.values = obj ? obj : [];
+    // console.log('-----');
+    // console.log(obj);
+    // console.log(this.pushPath);
+    // if (this.values && this.values.length) {
+    //   this.values = obj.filter(e => this.pushPath ? e[this.pushPath] !== '' : e !== '');
+    // }
+    // console.log(this.values);
+    // // console.log(obj.filter(e => this.pushPath ? e[this.pushPath] !== '' : e !== ''));
+    // // this.values = obj ? obj.filter(e => this.pushPath ? e[this.pushPath] !== '' : e !== '') : [];
+    // if (this.values.length === 0 || this.values[0] !== '') {
+    //   // add empty last field if pushTemplate is specified
+    //   if (this.pushTemplate !== null) {
+    //     this.values.push(cloneDeep(this.pushTemplate));
+    //   }
+    // }
   }
 
   registerOnChange(fn: any) {
diff --git a/src/app/sample/sample.component.html b/src/app/sample/sample.component.html
index 2500204..61de958 100644
--- a/src/app/sample/sample.component.html
+++ b/src/app/sample/sample.component.html
@@ -1,263 +1,324 @@
-<h2>{{new ? 'Add new sample' : 'Edit sample ' + sample.number}}</h2>
+<h2>{{mode === 'new' ? 'Add new sample' : 'Edit sample '}}</h2>
+<!--TODO: title-->
 
-<rb-loading-spinner *ngIf="loading"></rb-loading-spinner>
+<rb-loading-spinner *ngIf="loading; else content"></rb-loading-spinner>
 
-<form #sampleForm="ngForm" *ngIf="(!generatedSamples.length || editSampleBase) && !loading">
-  <div class="sample">
-    <div>
-      <rb-form-input name="materialname" label="material name" [rbDebounceTime]="0" [rbInitialOpen]="true"
-                     [rbFormInputAutocomplete]="autocomplete.bind(this, materialNames)" appValidate="stringOf"
-                     (keydown)="preventDefault($event)" (ngModelChange)="findMaterial($event)" ngModel
-                     [appValidateArgs]="[materialNames]" required [(ngModel)]="material.name" [autofocus]="true"
-                     title="trade name of the material, eg. Ultradur B4300 G6">
-        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-        <ng-template rbFormValidationMessage="failure">Unknown material, add properties for new material</ng-template>
-      </rb-form-input>
-      <rb-icon-button class="set-new-material space-below" icon="add" mode="secondary"
-                      (click)="setNewMaterial(!newMaterial)">New material</rb-icon-button>
-    </div>
+<ng-template #content>
 
-    <div class="material shaded-container" *ngIf="newMaterial" [@inOut]>
-      <h4>Material properties</h4>
-      <rb-form-input name="supplier" label="supplier"
-                     [rbFormInputAutocomplete]="autocomplete.bind(this, d.arr.materialSuppliers)"
-                     [rbDebounceTime]="0" [rbInitialOpen]="true" appValidate="string" required
-                     [(ngModel)]="material.supplier" #supplierInput="ngModel"
-                     (focusout)="checkTypo($event, 'materialSuppliers', 'supplier', modalWarning)"
-                     title="material supplier, eg. BASF">
-        <ng-template rbFormValidationMessage="failure">{{supplierInput.errors.failure}}</ng-template>
-      </rb-form-input>
-      <rb-form-input name="group" label="group"
-                     [rbFormInputAutocomplete]="autocomplete.bind(this, d.arr.materialGroups)"
-                     [rbDebounceTime]="0" [rbInitialOpen]="true" appValidate="string" required
-                     [(ngModel)]="material.group" #groupInput="ngModel"
-                     (focusout)="checkTypo($event, 'materialGroups', 'group', modalWarning)"
-                     title="chemical material type, eg. PA66">
-        <ng-template rbFormValidationMessage="failure">{{groupInput.errors.failure}}</ng-template>
-      </rb-form-input>
-      <ng-template #modalWarning>
-        <rb-alert alertTitle="Warning" type="warning" okBtnLabel="Use suggestion" cancelBtnLabel="Keep value">
-          The specified {{modalText.list}} could not be found in the list. <br>
-          Did you mean {{modalText.suggestion}}?
-        </rb-alert>
-      </ng-template>
-      <rb-array-input [(ngModel)]="material.numbers" name="materialNumbers" [pushTemplate]="''">
-        <rb-form-input *rbArrayInputItem="let item" [rbArrayInputListener]="'materialNumber'" [index]="item.i"
-                       label="material number" appValidate="string" [name]="'materialNumber-' + item.i"
-                       [ngModel]="item.value" title="Bosch material part number, eg. 5515753021"></rb-form-input>
-      </rb-array-input>
-      <rb-form-select name="propertiesSelect" label="Type" title="=overall material group specific properties"
-                      [(ngModel)]="material.properties.material_template">
-        <option *ngFor="let m of d.latest.materialTemplates" [value]="m._id">{{m.name}}</option>
-      </rb-form-select>
-      <rb-form-input *ngFor="let parameter of d.id.materialTemplates[material.properties.material_template].parameters;
-                     index as i" [name]="'materialParameter' + i"
-                     [label]="parameter.name" appValidate="string" required
-                     [(ngModel)]="material.properties[parameter.name]" #parameterInput="ngModel">
-        <ng-template rbFormValidationMessage="failure">{{parameterInput.errors.failure}}</ng-template>
-        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-      </rb-form-input>
-    </div>
+<!--BASE-->
 
-    <div>
-      <rb-form-select name="type" label="type" required [(ngModel)]="sample.type" ngModel
-                      title="material status of the sample">
-        <option value="as-delivered/raw">as-delivered/raw</option>
-        <option value="processed">processed</option>
-        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-      </rb-form-select>
-      <rb-form-input name="color" label="color" appValidate="string" [(ngModel)]="sample.color"
-                     #colorInput="ngModel" title="sample color, eg. black">
-        <ng-template rbFormValidationMessage="failure">{{colorInput.errors.failure}}</ng-template>
-        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-      </rb-form-input>
-      <rb-form-input name="batch" label="batch" appValidate="string" [(ngModel)]="sample.batch" #batchInput="ngModel"
-                     title="batch number the sample was from, eg. 2264486614">
-        <ng-template rbFormValidationMessage="failure">{{batchInput.errors.failure}}</ng-template>
-      </rb-form-input>
-    </div>
-  </div>
-
-  <div class="notes">
-    <rb-form-input name="comment" label="comment" appValidate="stringLength" [appValidateArgs]="[512]"
-                   [(ngModel)]="sample.notes.comment" #commentInput="ngModel"
-                   title="general remarks that cannot be expressed in additional properties, eg. stabilized">
-      <ng-template rbFormValidationMessage="failure">{{commentInput.errors.failure}}</ng-template>
-    </rb-form-input>
-    <h5>Sample references</h5>
-    <div *ngFor="let reference of sampleReferences; index as i" class="two-col" [@inOut]>
+  <form #sampleForm="ngForm" *ngIf="view.base">
+    <div class="sample">
       <div>
-        <rb-form-input [name]="'sr-id' + i" label="sample number" [rbFormInputAutocomplete]="sampleReferenceListBind()"
-                       [rbDebounceTime]="300" appValidate="stringOf"
-                       [appValidateArgs]="[sampleReferenceAutocomplete[i]]"
-                       (ngModelChange)="checkSampleReference($event, i)" [ngModel]="reference[0]" ngModel
-                       title="sample number of the referenced sample, eg. An31">
-          <ng-template rbFormValidationMessage="failure">Unknown sample number</ng-template>
+        <rb-form-input name="materialname" label="material name" [rbDebounceTime]="0" [rbInitialOpen]="true"
+                       [rbFormInputAutocomplete]="autocomplete.bind(this, materialNames)" appValidate="stringOf"
+                       (keydown)="preventDefault($event)" (ngModelChange)="findMaterial($event)" ngModel
+                       [appValidateArgs]="[materialNames]" required [(ngModel)]="material.name" [autofocus]="true"
+                       *ngIf="baseSample.material !== undefined || mode === 'new'"
+                       title="trade name of the material, eg. Ultradur B4300 G6">
+          <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+          <ng-template rbFormValidationMessage="failure">Unknown material, add properties for new material</ng-template>
         </rb-form-input>
+        <rb-icon-button class="set-new-material space-below" icon="add" mode="secondary"
+                        (click)="setNewMaterial(!newMaterial)" *ngIf="baseSample.material !== undefined">
+          New material
+        </rb-icon-button>
       </div>
-      <rb-form-input [name]="'sr-relation' + i" label="relation" appValidate="string" [required]="reference[0] !== ''"
-                     [(ngModel)]="reference[1]" title="description how the samples are connected, eg. belongs to">
-        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-      </rb-form-input>
-    </div>
-    <h5>Additional properties</h5>
-    <rb-array-input [(ngModel)]="customFields" name="customFields" [pushTemplate]="['', '']" pushPath="0"
-                    class="two-col" [@inOut]>
-      <ng-container *rbArrayInputItem="let item">
-        <div>
-          <rb-form-input [name]="'cf-key' + item.i" label="key" [rbArrayInputListener]="'cf-key'" [index]="item.i"
-                         [rbFormInputAutocomplete]="autocomplete.bind(this, availableCustomFields)" [rbDebounceTime]="0"
-                         [rbInitialOpen]="true" appValidate="unique" [appValidateArgs]="[uniqueCfValues(item.i)]"
-                         [ngModel]="item.value[0]" #keyInput="ngModel" title="name of additional property, eg. vwz">
-            <ng-template rbFormValidationMessage="failure">{{keyInput.errors.failure}}</ng-template>
-          </rb-form-input>
-        </div>
-        <rb-form-input [name]="'cf-value' + item.i" label="value" appValidate="string" [required]="item.value[0] !== ''"
-                       [ngModel]="item.value[1]" title="value of additional property, eg. 0 min">
+
+      <div class="material shaded-container" *ngIf="newMaterial" [@inOut]>
+        <h4>Material properties</h4>
+        <rb-form-input name="supplier" label="supplier"
+                       [rbFormInputAutocomplete]="autocomplete.bind(this, d.arr.materialSuppliers)"
+                       [rbDebounceTime]="0" [rbInitialOpen]="true" appValidate="string" required
+                       [(ngModel)]="material.supplier" #supplierInput="ngModel"
+                       (focusout)="checkTypo($event, 'materialSuppliers', 'supplier', modalWarning)"
+                       title="material supplier, eg. BASF">
+          <ng-template rbFormValidationMessage="failure">{{supplierInput.errors.failure}}</ng-template>
+        </rb-form-input>
+        <rb-form-input name="group" label="group"
+                       [rbFormInputAutocomplete]="autocomplete.bind(this, d.arr.materialGroups)"
+                       [rbDebounceTime]="0" [rbInitialOpen]="true" appValidate="string" required
+                       [(ngModel)]="material.group" #groupInput="ngModel"
+                       (focusout)="checkTypo($event, 'materialGroups', 'group', modalWarning)"
+                       title="chemical material type, eg. PA66">
+          <ng-template rbFormValidationMessage="failure">{{groupInput.errors.failure}}</ng-template>
+        </rb-form-input>
+        <ng-template #modalWarning>
+          <rb-alert alertTitle="Warning" type="warning" okBtnLabel="Use suggestion" cancelBtnLabel="Keep value">
+            The specified {{modalText.list}} could not be found in the list. <br>
+            Did you mean {{modalText.suggestion}}?
+          </rb-alert>
+        </ng-template>
+        <rb-array-input [(ngModel)]="material.numbers" name="materialNumbers" [pushTemplate]="''">
+          <rb-form-input *rbArrayInputItem="let item" [rbArrayInputListener]="'materialNumber'" [index]="item.i"
+                         label="material number" appValidate="string" [name]="'materialNumber-' + item.i"
+                         [ngModel]="item.value" title="Bosch material part number, eg. 5515753021"></rb-form-input>
+        </rb-array-input>
+        <rb-form-select name="propertiesSelect" label="Type" title="=overall material group specific properties"
+                        [(ngModel)]="material.properties.material_template">
+          <option *ngFor="let m of d.latest.materialTemplates" [value]="m._id">{{m.name}}</option>
+        </rb-form-select>
+        <rb-form-input *ngFor="let parameter of
+                         d.id.materialTemplates[material.properties.material_template].parameters;
+                       index as i" [name]="'materialParameter' + i"
+                       [label]="parameter.name" appValidate="string" required
+                       [(ngModel)]="material.properties[parameter.name]" #parameterInput="ngModel">
+          <ng-template rbFormValidationMessage="failure">{{parameterInput.errors.failure}}</ng-template>
           <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
         </rb-form-input>
-      </ng-container>
-    </rb-array-input>
-  </div>
+      </div>
 
-  <div *ngIf="editSampleBase; else generateSamples" class="space-below">
-    <button class="rb-btn rb-primary" type="submit" (click)="saveSample()" [disabled]="!sampleForm.form.valid">
-      Save sample
-    </button>
-  </div>
-  <ng-template #generateSamples>
-    <rb-form-input type="number" name="sample-count" label="number of samples" pattern="^\d+?$" required
-                   rbNumberConverter rbMin="1" [(ngModel)]="sampleCount" class="sample-count"
-                   title="number of samples to create with this base information">
-      <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-      <ng-template rbFormValidationMessage="rbMin">Must be at least 1</ng-template>
-    </rb-form-input>
-    <button class="rb-btn rb-primary space-below" type="submit" (click)="saveSample()"
-            [disabled]="!sampleForm.form.valid">
-      Generate sample{{sampleCount > 1 ? 's' : ''}}
-    </button>
-  </ng-template>
-</form>
+      <div>
+        <rb-form-select name="type" label="type" required [(ngModel)]="baseSample.type" ngModel
+                        *ngIf="baseSample.type !== undefined"
+                        title="material status of the sample">
+          <option value="as-delivered/raw">as-delivered/raw</option>
+          <option value="processed">processed</option>
+          <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+        </rb-form-select>
+        <rb-form-input name="color" label="color" appValidate="string" [(ngModel)]="baseSample.color"
+                       *ngIf="baseSample.color !== undefined" #colorInput="ngModel" title="sample color, eg. black">
+          <ng-template rbFormValidationMessage="failure">{{colorInput.errors.failure}}</ng-template>
+          <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+        </rb-form-input>
+        <rb-form-input name="batch" label="batch" appValidate="string" [(ngModel)]="baseSample.batch"
+                       #batchInput="ngModel" *ngIf="baseSample.batch !== undefined"
+                       title="batch number the sample was from, eg. 2264486614">
+          <ng-template rbFormValidationMessage="failure">{{batchInput.errors.failure}}</ng-template>
+        </rb-form-input>
+      </div>
+    </div>
 
+    <div class="notes" *ngIf="baseSample.notes !== undefined">
+      <rb-form-input name="comment" label="comment" appValidate="stringLength" [appValidateArgs]="[512]"
+                     [(ngModel)]="baseSample.notes.comment" #commentInput="ngModel"
+                     title="general remarks that cannot be expressed in additional properties, eg. stabilized">
+        <ng-template rbFormValidationMessage="failure">{{commentInput.errors.failure}}</ng-template>
+      </rb-form-input>
+      <h5>Sample references</h5>
+      <div *ngFor="let reference of sampleReferences; index as i" class="two-col" [@inOut]>
+        <div>
+          <rb-form-input [name]="'sr-id' + i" label="sample number"
+                         [rbFormInputAutocomplete]="sampleReferenceListBind()"
+                         [rbDebounceTime]="300" appValidate="stringOf"
+                         [appValidateArgs]="[sampleReferenceAutocomplete[i]]"
+                         (ngModelChange)="checkSampleReference($event, i)" [ngModel]="reference[0]" ngModel
+                         title="sample number of the referenced sample, eg. An31">
+            <ng-template rbFormValidationMessage="failure">Unknown sample number</ng-template>
+          </rb-form-input>
+        </div>
+        <rb-form-input [name]="'sr-relation' + i" label="relation" appValidate="string" [required]="reference[0] !== ''"
+                       [(ngModel)]="reference[1]" title="description how the samples are connected, eg. belongs to">
+          <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+        </rb-form-input>
+      </div>
+      <h5>Additional properties</h5>
+      <rb-array-input [(ngModel)]="customFields" name="customFields" [pushTemplate]="['', '']" pushPath="0"
+                      class="two-col" [@inOut]>
+        <ng-container *rbArrayInputItem="let item">
+          <div>
+            <rb-form-input [name]="'cf-key' + item.i" label="key" [rbArrayInputListener]="'cf-key'" [index]="item.i"
+                           [rbFormInputAutocomplete]="autocomplete.bind(this, availableCustomFields)"
+                           [rbDebounceTime]="0"
+                           [rbInitialOpen]="true" appValidate="unique" [appValidateArgs]="[uniqueCfValues(item.i)]"
+                           [(ngModel)]="item.value[0]" #keyInput="ngModel" title="name of additional property, eg. vwz">
+              <ng-template rbFormValidationMessage="failure">{{keyInput.errors.failure}}</ng-template>
+            </rb-form-input>
+          </div>
+          <rb-form-input [name]="'cf-value' + item.i" label="value" appValidate="string"
+                         [required]="item.value[0] !== ''"
+                         [(ngModel)]="item.value[1]" title="value of additional property, eg. 0 min">
+            <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+          </rb-form-input>
+        </ng-container>
+      </rb-array-input>
+    </div>
 
-<div *ngIf="generatedSamples.length && !loading">
-  <div *ngIf="!editSampleBase">
-    <h3 *ngIf="new">Successfully added samples:</h3>
-    <span *ngIf="!new" class="rb-ic rb-ic-edit clickable" (click)="checkFormAfterInit = editSampleBase = true"></span>
+    <div *ngIf="samples.length; else generateSamples" class="space-below">
+      <rb-icon-button icon="save" mode="primary" type="submit" (click)="saveSample()"
+                      [disabled]="!sampleForm.form.valid">
+        Save sample
+      </rb-icon-button>
+    </div>
+    <ng-template #generateSamples>
+      <rb-form-input type="number" name="sample-count" label="number of samples" pattern="^\d+?$" required
+                     rbNumberConverter rbMin="1" [(ngModel)]="sampleCount" class="sample-count"
+                     title="number of samples to create with this base information">
+        <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+        <ng-template rbFormValidationMessage="rbMin">Must be at least 1</ng-template>
+      </rb-form-input>
+      <button class="rb-btn rb-primary space-below" type="submit" (click)="saveSample()"
+              [disabled]="!sampleForm.form.valid">
+        Generate sample{{sampleCount > 1 ? 's' : ''}}
+      </button>
+    </ng-template>
+  </form>
+
+<!--BASE SUMMARY-->
+
+  <div *ngIf="view.baseSum">
+    <h3 *ngIf="mode === 'new'">Successfully added samples:</h3>
+    <span class="rb-ic rb-ic-edit clickable" (click)="checkFormAfterInit = view.base = true; view.baseSum = false">
+    </span>
     <rb-table id="response-data">
-      <tr><td>Material</td><td>{{generatedSamples[0].material.name}}</td></tr>
-      <tr><td>Type</td><td>{{generatedSamples[0].type}}</td></tr>
-      <tr><td>color</td><td>{{generatedSamples[0].color}}</td></tr>
-      <tr><td>Batch</td><td>{{generatedSamples[0].batch}}</td></tr>
+      <tr><td>Material</td><td>{{material.name}}</td></tr>
+      <tr><td>Type</td><td>{{baseSample.type}}</td></tr>
+      <tr><td>color</td><td>{{baseSample.color}}</td></tr>
+      <tr><td>Batch</td><td>{{baseSample.batch}}</td></tr>
+      <tr><td>Comment</td><td>{{baseSample.notes.comment}}</td></tr>
+      <tr *ngFor="let reference of sampleReferences.slice(0, -1)">
+        <td>Sample reference</td><td>{{reference[0]}} - {{reference[1]}}</td>
+      </tr>
+      <tr *ngFor="let field of customFields"><td>{{field[0]}}</td><td>{{field[1]}}</td></tr>
     </rb-table>
   </div>
 
-  <form #cmForm="ngForm">
-    <div *ngFor="let gSample of generatedSamples; index as gIndex">
-      <h4 *ngIf="new">{{gSample.number}}</h4>
-      <div class="conditions shaded-container space-below">
-        <h5>
-          Condition
-          <button class="rb-btn rb-secondary condition-set" type="button" (click)="toggleCondition(gSample)">
-            {{gSample.condition.condition_template ? 'Do not set condition' : 'Set condition'}}
-          </button>
-        </h5>
-        <div *ngIf="gSample.condition.condition_template" [@inOut]>
-          <rb-form-select name="conditionSelect" label="Condition"
-                          [(ngModel)]="gSample.condition.condition_template">
-            <option *ngFor="let c of d.latest.conditionTemplates" [value]="c._id">{{c.name}}</option>
-          </rb-form-select>
+<!--CM-->
 
-          <ng-container *ngFor="let parameter of
-                        d.id.conditionTemplates[gSample.condition.condition_template].parameters; index as i"
-                        [ngSwitch]="(parameter.range.values ? 1 : 0)">
-            <rb-form-select *ngSwitchCase="1"
-                            [name]="'conditionParameter-' + gIndex + '-' + i"
-                            [label]="parameter.name" [(ngModel)]="gSample.condition[parameter.name]" ngModel>
-              <option *ngFor="let value of parameter.range.values" [value]="value">{{value}}</option>
-              <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+  <div *ngIf="view.cm">
+    <form #cmForm="ngForm" [ngClass]="{'cm-form': samples.length > 1}">
+      <rb-tab-panel (tabChanged)="cmSampleIndex = $event" class="space-below" *ngIf="samples.length > 1">
+        <ng-container *ngFor="let sample of samples; index as i">
+          <div *rbTabPanelItem="sample.number; id: i"></div>
+        </ng-container>
+      </rb-tab-panel>
+      <div *ngFor="let sample of samples; index as gIndex"
+           [ngStyle]="{display: gIndex == cmSampleIndex || gIndex == cmSampleIndex  + 1 ? 'initial' : 'none'}">
+        <h4 *ngIf="samples.length > 1">{{sample.number}}</h4>
+        <div class="conditions shaded-container space-below">
+          <h5>
+            Condition
+            <button class="rb-btn rb-secondary condition-set" type="button" (click)="toggleCondition(sample)">
+              {{sample.condition.condition_template ? 'Do not set condition' : 'Set condition'}}
+            </button>
+          </h5>
+          <div *ngIf="sample.condition.condition_template" [@inOut]>
+            <rb-form-select name="conditionSelect" label="Condition"
+                            [(ngModel)]="sample.condition.condition_template">
+              <option *ngFor="let c of d.latest.conditionTemplates" [value]="c._id">{{c.name}}</option>
             </rb-form-select>
-            <rb-form-input *ngSwitchDefault
-                           [name]="'conditionParameter-' + gIndex + '-' + i"
-                           [label]="parameter.name" appValidate="string" required
-                           [(ngModel)]="gSample.condition[parameter.name]" #parameterInput="ngModel">
-              <ng-template rbFormValidationMessage="failure">{{parameterInput.errors.failure}}</ng-template>
-              <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-            </rb-form-input>
-          </ng-container>
-        </div>
-      </div>
 
-      <div class="measurements shaded-container space-below">
-        <h5>Measurements</h5>
-        <div *ngFor="let measurement of gSample.measurements; index as mIndex" [@inOut]>
-          <rb-form-select [name]="'measurementTemplateSelect-' + gIndex + '-' + mIndex" label="Template"
-                          [(ngModel)]="measurement.measurement_template"
-                          (ngModelChange)="clearMeasurement(gIndex, mIndex)">
-            <option *ngFor="let m of d.latest.measurementTemplates" [value]="m._id">{{m.name}}</option>
-          </rb-form-select>
-
-          <div *ngFor="let parameter of d.id.measurementTemplates[measurement.measurement_template].parameters;
-               index as pIndex">
-            <ng-container [ngSwitch]="(parameter.range.type ? 1 : 0) + (parameter.range.values ? 2 : 0)">
-              <rb-form-file *ngSwitchCase="1"
-                            [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
-                            [label]="parameter.name" maxSize="10000000" multiple
-                            [required]="measurement.values[parameter.name] &&
-                            !measurement.values[parameter.name].length"
-                            (ngModelChange)="fileToArray($event, gIndex, mIndex, parameter.name)"
-                            placeholder="Select file or drag and drop" dragDrop ngModel>
-                <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
-              </rb-form-file>
-              <rb-form-select *ngSwitchCase="2"
-                              [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
-                              [label]="parameter.name" [(ngModel)]="measurement.values[parameter.name]" ngModel>
-                <option *ngFor="let device of d.d.user.devices" [value]="device">{{device}}</option>
+            <ng-container *ngFor="let parameter of
+                          d.id.conditionTemplates[sample.condition.condition_template].parameters; index as i"
+                          [ngSwitch]="(parameter.range.values ? 1 : 0)">
+              <rb-form-select *ngSwitchCase="1"
+                              [name]="'conditionParameter-' + gIndex + '-' + i"
+                              [label]="parameter.name" [(ngModel)]="sample.condition[parameter.name]" ngModel>
+                <option *ngFor="let value of parameter.range.values" [value]="value">{{value}}</option>
                 <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
               </rb-form-select>
               <rb-form-input *ngSwitchDefault
-                             [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
-                             [label]="parameter.name" appValidate="string"
-                             [(ngModel)]="measurement.values[parameter.name]" #parameterInput="ngModel">
+                             [name]="'conditionParameter-' + gIndex + '-' + i"
+                             [label]="parameter.name" appValidate="string" required
+                             [(ngModel)]="sample.condition[parameter.name]" #parameterInput="ngModel">
                 <ng-template rbFormValidationMessage="failure">{{parameterInput.errors.failure}}</ng-template>
                 <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
               </rb-form-input>
             </ng-container>
-            <canvas baseChart *ngIf="parameter.range.type && charts[gIndex][mIndex][0].data.length > 0"
-                    class="dpt-chart"
-                    [@inOut]
-                    [datasets]="charts[gIndex][mIndex]"
-                    [labels]="[]"
-                    [options]="chartOptions"
-                    [legend]="false"
-                    chartType="scatter">
-            </canvas>
           </div>
-          <rb-icon-button icon="delete" mode="danger" (click)="removeMeasurement(gIndex, mIndex)">
-            Delete measurement
-          </rb-icon-button>
         </div>
 
-        &nbsp;
+        <div class="measurements shaded-container space-below">
+          <h5>
+            Measurements
+            <rb-icon-button icon="undo" mode="secondary" *ngIf="measurementRestoreData.length"
+                            class="restore-measurements" (click)="restoreMeasurements()">
+              Restore measurements
+            </rb-icon-button>
+          </h5>
+          <div *ngFor="let measurement of sample.measurements; index as mIndex" [@inOut]  class="space-below">
+            <rb-form-select [name]="'measurementTemplateSelect-' + gIndex + '-' + mIndex" label="Template"
+                            [(ngModel)]="measurement.measurement_template"
+                            (ngModelChange)="clearMeasurement(gIndex, mIndex)">
+              <option *ngFor="let m of d.latest.measurementTemplates" [value]="m._id">{{m.name}}</option>
+            </rb-form-select>
 
-        <div>
-          <rb-icon-button icon="add" mode="secondary" (click)="addMeasurement(gIndex)">
-            New measurement
-          </rb-icon-button>
+            <div *ngFor="let parameter of d.id.measurementTemplates[measurement.measurement_template].parameters;
+                 index as pIndex">
+              <ng-container [ngSwitch]="(parameter.range.type ? 1 : 0) + (parameter.range.values ? 2 : 0)">
+                <rb-form-file *ngSwitchCase="1"
+                              [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
+                              [label]="parameter.name" maxSize="10000000" multiple
+                              [required]="measurement.values[parameter.name] &&
+                              !measurement.values[parameter.name].length"
+                              (ngModelChange)="fileToArray($event, gIndex, mIndex, parameter.name)"
+                              placeholder="Select file or drag and drop" dragDrop ngModel>
+                  <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+                </rb-form-file>
+                <rb-form-select *ngSwitchCase="2"
+                                [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
+                                [label]="parameter.name" [(ngModel)]="measurement.values[parameter.name]" ngModel>
+                  <option *ngFor="let device of d.d.user.devices" [value]="device">{{device}}</option>
+                  <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+                </rb-form-select>
+                <rb-form-input *ngSwitchDefault
+                               [name]="'measurementParameter-' + gIndex + '-' + mIndex + '-' + pIndex"
+                               [label]="parameter.name" appValidate="string"
+                               [(ngModel)]="measurement.values[parameter.name]" #parameterInput="ngModel">
+                  <ng-template rbFormValidationMessage="failure">{{parameterInput.errors.failure}}</ng-template>
+                  <ng-template rbFormValidationMessage="required">Cannot be empty</ng-template>
+                </rb-form-input>
+              </ng-container>
+              <canvas baseChart *ngIf="parameter.range.type && charts[gIndex][mIndex][0].data.length > 0"
+                      class="dpt-chart"
+                      [@inOut]
+                      [datasets]="charts[gIndex][mIndex]"
+                      [labels]="[]"
+                      [options]="chartOptions"
+                      [legend]="false"
+                      chartType="scatter">
+              </canvas>
+            </div>
+            <rb-icon-button icon="delete" mode="danger" (click)="removeMeasurement(gIndex, mIndex)">
+              Delete measurement
+            </rb-icon-button>
+          </div>
+          <div>
+            <rb-icon-button icon="add" mode="secondary" (click)="addMeasurement(gIndex)">
+              New measurement
+            </rb-icon-button>
+          </div>
         </div>
       </div>
-    </div>
-    <rb-icon-button icon="save" mode="primary" type="submit" (click)="cmSave()" [disabled]="!cmForm.form.valid">
-      Save sample{{generatedSamples.length > 1 ? 's' : ''}}
+      <div class="buttons">
+        <rb-icon-button icon="summary" mode="primary" type="submit" (click)="view.cm = false; view.cmSum = true"
+                        [disabled]="!cmForm.form.valid">
+          Summary
+        </rb-icon-button>
+        <rb-icon-button class="delete-sample" icon="delete" mode="danger" *ngIf="mode !== 'new'"
+                        (click)="deleteConfirm(modalDeleteConfirm)">
+          Delete sample
+        </rb-icon-button>
+        <ng-template #modalDeleteConfirm>
+          <rb-alert alertTitle="Are you sure?" type="danger" okBtnLabel="Delete sample" cancelBtnLabel="Cancel">
+            Do you really want to delete this sample?
+          </rb-alert>
+        </ng-template>
+      </div>
+    </form>
+  </div>
+
+<!--CM SUMMARY-->
+
+  <div *ngIf="view.cmSum">
+    <span class="rb-ic rb-ic-edit clickable" (click)="checkFormAfterInit = view.cm = true; view.cmSum = false">
+    </span>
+    <rb-table>
+      <ng-container *ngFor="let sample of samples; index as gIndex">
+        <tr><th>{{sample.number}}</th><th></th></tr>
+        <tr *ngFor="let parameter of (d.id.conditionTemplates[sample.condition.condition_template] || {parameters: []})
+            .parameters">
+          <td>{{parameter.name}}</td><td>{{sample.condition[parameter.name]}}</td>
+        </tr>
+        <ng-container *ngFor="let measurement of sample.measurements">
+          <tr *ngFor="let parameter of d.id.measurementTemplates[measurement.measurement_template].parameters">
+            <td>{{parameter.name}}</td><td>{{measurement.values[parameter.name]}}</td>
+          </tr>
+        </ng-container>
+      </ng-container>
+    </rb-table>
+    <rb-icon-button icon="save" mode="primary" type="submit" (click)="cmSave()">
+      Save sample{{samples.length > 1 ? 's' : ''}}
     </rb-icon-button>
-    <rb-icon-button class="delete-sample" icon="delete" mode="danger" *ngIf="!new"
-                    (click)="deleteConfirm(modalDeleteConfirm)">
-      Delete sample
-    </rb-icon-button>
-    <ng-template #modalDeleteConfirm>
-      <rb-alert alertTitle="Are you sure?" type="danger" okBtnLabel="Delete sample" cancelBtnLabel="Cancel">
-        Do you really want to delete {{sample.number}}?
-      </rb-alert>
-    </ng-template>
-  </form>
-</div>
+  </div>
+</ng-template>
diff --git a/src/app/sample/sample.component.scss b/src/app/sample/sample.component.scss
index 8dbbd6a..5ec00c6 100644
--- a/src/app/sample/sample.component.scss
+++ b/src/app/sample/sample.component.scss
@@ -33,3 +33,17 @@ td:first-child {
 .delete-sample {
   float: right;
 }
+
+.cm-form {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  grid-column-gap: 1rem;
+
+  rb-tab-panel, div.buttons {
+    grid-column: span 2;
+  }
+}
+
+.restore-measurements {
+  float: right;
+}
diff --git a/src/app/sample/sample.component.ts b/src/app/sample/sample.component.ts
index 983c9d0..888b267 100644
--- a/src/app/sample/sample.component.ts
+++ b/src/app/sample/sample.component.ts
@@ -1,6 +1,7 @@
 import cloneDeep from 'lodash/cloneDeep';
 import merge from 'lodash/merge';
 import omit from 'lodash/omit';
+import isEqual from 'lodash/isEqual';
 import strCompare from 'str-compare';
 import {
   AfterContentChecked,
@@ -21,6 +22,7 @@ import {animate, style, transition, trigger} from '@angular/animations';
 import {Observable} from 'rxjs';
 import {ModalService} from '@inst-iot/bosch-angular-ui-components';
 import {DataService} from '../services/data.service';
+import {LoginService} from '../services/login.service';
 
 // TODO: additional property value not validated on edit
 
@@ -48,9 +50,9 @@ export class SampleComponent implements OnInit, AfterContentChecked {
   @ViewChild('sampleForm') sampleForm: NgForm;
   @ViewChild('cmForm') cmForm: NgForm;
 
-  sample = new SampleModel();            // base sample which is saved
+  baseSample = new SampleModel();            // base sample which is saved
   sampleCount = 1;                       // number of samples to be generated
-  generatedSamples: SampleModel[] = [];  // gets filled with response data after saving the sample
+  samples: SampleModel[] = [];  // gets filled with response data after saving the sample
 
   sampleReferences: [string, string, string][] = [['', '', '']];
   sampleReferenceFinds: {_id: string, number: string}[] = [];    // raw sample reference data from db
@@ -66,11 +68,20 @@ export class SampleComponent implements OnInit, AfterContentChecked {
   material = new MaterialModel();        // object of current selected material
   defaultDevice = '';                    // default device for spectra
 
-  new;                                   // true if new sample should be created
-  editSampleBase = false;                // set true to edit sample base values even when generatedSamples .length > 0
+  // component mode, either new for generating new samples, editOne or editMulti, editing one or multiple samples
+  mode = 'new';
+  view = {                               // active views
+    base: false,                         // base sample
+    baseSum: false,                      // base sample summary
+    cm: false,                           // conditions and measurements
+    cmSum: false                         // conditions and measurements summary
+  };
   loading = 0;                           // number of currently loading instances
   checkFormAfterInit = false;
   modalText = {list: '', suggestion: ''};
+  cmSampleIndex = '0';
+  measurementDeleteList = [];            // buffer with measurements to delete, if the user confirms and saves the cm changes
+  measurementRestoreData: MeasurementModel[] = [];  // deleted measurements if user is allowed and measurements are available
 
   charts = [[]];                         // chart data for spectra
   readonly chartInit = [{
@@ -101,11 +112,12 @@ export class SampleComponent implements OnInit, AfterContentChecked {
     private validation: ValidationService,
     public autocomplete: AutocompleteService,
     private modal: ModalService,
-    public d: DataService
+    public d: DataService,
+    private login: LoginService
   ) { }
 
   ngOnInit(): void {
-    this.new = this.router.url === '/samples/new';
+    this.mode = this.router.url === '/samples/new' ? 'new' : '';
     this.loading = 7;
     this.d.load('materials', () => {
       this.materialNames = this.d.arr.materials.map(e => e.name);
@@ -144,49 +156,88 @@ export class SampleComponent implements OnInit, AfterContentChecked {
       this.availableCustomFields = this.d.arr.sampleNotesFields.map(e => e.name);
       this.loading--;
     });
-    if (!this.new) {
-      this.loading++;
-      this.api.get<SampleModel>('/sample/' + this.route.snapshot.paramMap.get('id'), sData => {
-        this.sample.deserialize(sData);
-        this.generatedSamples[0] = this.sample;
-        this.charts = [[]];
-        let spectrumCounter = 0;  // generate charts for spectrum measurements
-        this.generatedSamples[0].measurements.forEach((measurement, i) => {
-          this.charts[0].push(cloneDeep(this.chartInit));
-          if (measurement.values.dpt) {
-            setTimeout(() => {
-              this.generateChart(measurement.values.dpt, 0, i);
-            }, spectrumCounter * 20);  // generate charts one after another to avoid freezing the UI
-            spectrumCounter ++;
-          }
-        });
-        this.material = new MaterialModel().deserialize(sData.material);  // read material
-        this.customFields = this.sample.notes.custom_fields && this.sample.notes.custom_fields !== {} ?  // read custom fields
-          Object.keys(this.sample.notes.custom_fields).map(e => [e, this.sample.notes.custom_fields[e]]) : [];
-        if (this.sample.notes.sample_references.length) {  // read sample references
-          this.sampleReferences = [];
-          this.sampleReferenceAutocomplete = [];
-          let loadCounter = this.sample.notes.sample_references.length;  // count down instances still loading
-          this.sample.notes.sample_references.forEach(reference => {
-            this.api.get<SampleModel>('/sample/' + reference.sample_id, srData => {  // get sample numbers for ids
-              this.sampleReferences.push([srData.number, reference.relation, reference.sample_id]);
-              this.sampleReferenceAutocomplete.push([srData.number]);
-              if (!--loadCounter) {  // insert empty template when all instances were loaded
-                this.sampleReferences.push(['', '', '']);
-                this.sampleReferenceAutocomplete.push([]);
-              }
-            });
+    if (this.mode !== 'new') {
+      const sampleIds = this.route.snapshot.paramMap.get('id').split(',');
+      if (sampleIds.length === 1) {
+        this.mode = 'editOne';
+        this.view.baseSum = true;
+        this.view.cm = true;
+        if (this.login.isLevel.dev) {  // load measurement restore data
+          this.api.get<MeasurementModel[]>('/measurement/sample/' + sampleIds[0], (data, ignore) => {
+            if (data) {
+              this.measurementRestoreData = data.filter(e => e.status === 'deleted').map(e => new MeasurementModel().deserialize(e));
+            }
+            console.log(this.measurementRestoreData);
           });
         }
-        this.loading--;
-        this.checkFormAfterInit = true;
+      }
+      else {
+        this.mode = 'editMulti';
+        this.view.base = true;
+      }
+      this.loading += sampleIds.length;
+      this.samples = [];
+      sampleIds.forEach((sampleId, i) => {
+        this.api.get<SampleModel>('/sample/' + sampleId, sData => {
+          this.samples.push(new SampleModel().deserialize(sData));
+          if (i === 0) {
+            this.baseSample.deserialize(sData);
+            this.material = new MaterialModel().deserialize(sData.material);  // read material
+            this.customFields = this.baseSample.notes.custom_fields && this.baseSample.notes.custom_fields !== {} ?  // read custom fields
+              Object.keys(this.baseSample.notes.custom_fields).map(e => [e, this.baseSample.notes.custom_fields[e]]) : [];
+            if (this.baseSample.notes.sample_references.length) {  // read sample references
+              this.sampleReferences = [];
+              this.sampleReferenceAutocomplete = [];
+              let loadCounter = this.baseSample.notes.sample_references.length;  // count down instances still loading
+              this.baseSample.notes.sample_references.forEach(reference => {
+                this.api.get<SampleModel>('/sample/' + reference.sample_id, srData => {  // get sample numbers for ids
+                  this.sampleReferences.push([srData.number, reference.relation, reference.sample_id]);
+                  this.sampleReferenceAutocomplete.push([srData.number]);
+                  if (!--loadCounter) {  // insert empty template when all instances were loaded
+                    this.sampleReferences.push(['', '', '']);
+                    this.sampleReferenceAutocomplete.push([]);
+                  }
+                });
+              });
+            }
+            if (this.mode === 'editOne') {
+              this.charts = [[]];
+              let spectrumCounter = 0;  // generate charts for spectrum measurements
+              this.samples[i].measurements.forEach((measurement, j) => {
+                this.charts[i].push(cloneDeep(this.chartInit));
+                if (measurement.values.dpt) {
+                  setTimeout(() => {
+                    this.generateChart(measurement.values.dpt, 0, j);
+                  }, spectrumCounter * 20);  // generate charts one after another to avoid freezing the UI
+                  spectrumCounter ++;
+                }
+              });
+            }
+            this.checkFormAfterInit = true;
+          }
+          else {
+            ['type', 'color', 'batch', 'notes'].forEach((key) => {
+              console.log(isEqual(sData[key], this.baseSample[key]));
+              if (!isEqual(sData[key], this.baseSample[key])) {
+                this.baseSample[key] = undefined;
+              }
+            });
+            if (!isEqual(sData.material.name, this.baseSample.material.name)) {
+              this.baseSample.material.name = undefined;
+            }
+          }
+          this.loading--;
+        });
       });
     }
+    else {
+      this.view.base = true;
+    }
   }
 
   ngAfterContentChecked() {
-    if (this.generatedSamples.length) {  // conditions are displayed
-      this.generatedSamples.forEach((gSample, gIndex) => {
+    if (this.samples.length) {  // conditions are displayed
+      this.samples.forEach((gSample, gIndex) => {
         if (this.d.id.conditionTemplates[gSample.condition.condition_template]) {
           this.d.id.conditionTemplates[gSample.condition.condition_template].parameters.forEach((parameter, pIndex) => {
             this.attachValidator(this.cmForm, `conditionParameter-${gIndex}-${pIndex}`, parameter.range, true);
@@ -207,7 +258,7 @@ export class SampleComponent implements OnInit, AfterContentChecked {
     }
 
     if (this.checkFormAfterInit) {
-      if (this.editSampleBase) {  // validate sampleForm
+      if (this.view.base) {  // validate sampleForm
         if (this.sampleForm !== undefined && this.sampleForm.form.get('cf-key0')) {
           this.checkFormAfterInit = false;
           Object.keys(this.sampleForm.form.controls).forEach(field => {
@@ -218,20 +269,18 @@ export class SampleComponent implements OnInit, AfterContentChecked {
       else {  // validate cmForm
         // check that all fields are ready for validation
         let formReady: boolean = this.cmForm !== undefined;  // forms exist
-        if (this.generatedSamples[0].condition.condition_template) {  // if condition is set, last condition field exists
+        if (this.samples[0].condition.condition_template) {  // if condition is set, last condition field exists
           formReady = formReady && this.cmForm.form.get('conditionParameter-0-' +
-            (this.d.id.conditionTemplates[this.generatedSamples[0].condition.condition_template].parameters.length - 1)) as any;
+            (this.d.id.conditionTemplates[this.samples[0].condition.condition_template].parameters.length - 1)) as any;
         }
-        if (this.generatedSamples[0].measurements.length) {  // if there are measurements, last measurement field exists
-          formReady = formReady && this.cmForm.form.get('measurementParameter-0-' + (this.generatedSamples[0].measurements.length - 1) +
-            '-' + (this.d.id.measurementTemplates[this.generatedSamples[0].measurements[this.generatedSamples[0].measurements.length - 1]
+        if (this.samples[0].measurements.length) {  // if there are measurements, last measurement field exists
+          formReady = formReady && this.cmForm.form.get('measurementParameter-0-' + (this.samples[0].measurements.length - 1) +
+            '-' + (this.d.id.measurementTemplates[this.samples[0].measurements[this.samples[0].measurements.length - 1]
               .measurement_template].parameters.length - 1)) as any;
         }
         if (formReady) {  // fields are ready, do validation
           this.checkFormAfterInit = false;
           Object.keys(this.cmForm.form.controls).forEach(field => {
-            console.log(field);
-            console.log(this.cmForm.form.get(field).valid);
             this.cmForm.form.get(field).updateValueAndValidity();
           });
         }
@@ -264,17 +313,16 @@ export class SampleComponent implements OnInit, AfterContentChecked {
 
   // save base sample
   saveSample() {
-    if (this.new) {
+    if (this.samples.length === 0) {
       this.loading = this.sampleCount;  // set up loading spinner
     }
     new Promise<void>(resolve => {
       if (this.newMaterial) {  // save material first if new one exists
-        console.log(this.material);
         this.material.numbers = this.material.numbers.filter(e => e !== '');
         this.api.post<MaterialModel>('/material/new', this.material.sendFormat(), data => {
           this.d.arr.materials.push(data);  // add material to data
           this.material = data;
-          this.sample.material_id = data._id;  // add new material id to sample data
+          this.baseSample.material_id = data._id;  // add new material id to sample data
           resolve();
         });
       }
@@ -282,29 +330,36 @@ export class SampleComponent implements OnInit, AfterContentChecked {
         resolve();
       }
     }).then(() => {  // save sample
-      this.sample.notes.custom_fields = {};
+      this.baseSample.notes.custom_fields = {};
       this.customFields.forEach(element => {
         if (element[0] !== '') {
-          this.sample.notes.custom_fields[element[0]] = element[1];
+          this.baseSample.notes.custom_fields[element[0]] = element[1];
         }
       });
-      this.sample.notes.sample_references = this.sampleReferences
+      this.baseSample.notes.sample_references = this.sampleReferences
         .filter(e => e[0] && e[1] && e[2])
         .map(e => ({sample_id: e[2], relation: e[1]}));
-      if (this.new) {
+      if (this.samples.length === 0) {  // only save new sample for the first time in mode new, otherwise save changes
         for (let i = 0; i < this.sampleCount; i ++) {
-          this.api.post<SampleModel>('/sample/new', this.sample.sendFormat(), data => {
-            this.generatedSamples[i] = new SampleModel().deserialize(data);
-            this.generatedSamples[i].material = this.d.arr.materials.find(e => e._id === this.generatedSamples[i].material_id);
+          this.api.post<SampleModel>('/sample/new', this.baseSample.sendFormat(), data => {
+            this.samples[i] = new SampleModel().deserialize(data);
+            this.samples[i].material = this.d.arr.materials.find(e => e._id === this.samples[i].material_id);
             this.loading --;
           });
         }
+        this.view.base = false;
+        this.view.baseSum = true;
+        this.view.cm = true;
       }
       else {
-        this.api.put<SampleModel>('/sample/' + this.sample._id, this.sample.sendFormat(), data => {
-          merge(this.generatedSamples[0], omit(data, ['condition']));
-          this.generatedSamples[0].material = this.d.arr.materials.find(e => e._id === this.generatedSamples[0].material_id);
-          this.editSampleBase = false;
+        this.samples.forEach((sample, i) => {
+          console.log(sample._id);
+          this.api.put<SampleModel>('/sample/' + sample._id, this.baseSample.sendFormat(), data => {
+            merge(this.samples[i], omit(data, ['condition']));
+            this.samples[i].material = this.d.arr.materials.find(e => e._id === this.samples[0].material_id);
+            this.view.base = false;
+            this.view.baseSum = true;
+          });
         });
       }
     });
@@ -312,7 +367,7 @@ export class SampleComponent implements OnInit, AfterContentChecked {
 
   // save conditions and measurements
   cmSave() {  // save measurements and conditions
-    this.generatedSamples.forEach(sample => {
+    this.samples.forEach(sample => {
       if (sample.condition.condition_template) {  // condition was set
         this.api.put('/sample/' + sample._id, {condition: sample.condition});
       }
@@ -334,24 +389,45 @@ export class SampleComponent implements OnInit, AfterContentChecked {
           this.api.delete('/measurement/' + measurement._id);
         }
       });
+      this.measurementDeleteList.forEach(measurement => {
+        this.api.delete('/measurement/' + measurement);
+      });
     });
 
     this.router.navigate(['/samples']);
   }
 
+  restoreMeasurements() {
+    let spectrumCounter = 0;  // generate charts for spectrum measurements
+    const measurementCount = this.samples[0].measurements.length;
+    this.measurementRestoreData.forEach((measurement, i) => {
+      this.api.put('/measurement/restore/' + measurement._id, {}, () => {
+        this.samples[0].measurements.push(measurement);
+        this.charts[0].push(cloneDeep(this.chartInit));
+        if (measurement.values.dpt) {
+          setTimeout(() => {
+            this.generateChart(measurement.values.dpt, 0, measurementCount + i);
+          }, spectrumCounter * 20);  // generate charts one after another to avoid freezing the UI
+          spectrumCounter ++;
+        }
+        this.checkFormAfterInit = true;
+      });
+    });
+  }
+
   // set material based on found material name
   findMaterial(name) {
     const res = this.d.arr.materials.find(e => e.name === name);  // search for match
     if (res) {  // material found
       this.material = cloneDeep(res);
-      this.sample.material_id = this.material._id;
+      this.baseSample.material_id = this.material._id;
     }
     else {  // no matching material found
-      if (this.sample.material_id !== null) {  // reset previous match
+      if (this.baseSample.material_id !== null) {  // reset previous match
         this.material = new MaterialModel();
         this.material.properties.material_template = this.d.latest.materialTemplates.find(e => e.name === 'plastic')._id;
       }
-      this.sample.material_id = null;
+      this.baseSample.material_id = null;
     }
     this.setNewMaterial();
   }
@@ -359,9 +435,9 @@ export class SampleComponent implements OnInit, AfterContentChecked {
   // set newMaterial, if value === null -> toggle
   setNewMaterial(value = null) {
     if (value === null) {  // toggle dialog
-      this.newMaterial = !this.sample.material_id;
+      this.newMaterial = !this.baseSample.material_id;
     }
-    else if (value || (!value && this.sample.material_id !== null )) {  // set to false only if material already exists
+    else if (value || (!value && this.baseSample.material_id !== null )) {  // set to false only if material already exists
       this.newMaterial = value;
     }
     if (this.newMaterial) {  // set validators if dialog is open
@@ -376,10 +452,9 @@ export class SampleComponent implements OnInit, AfterContentChecked {
 
   // add a new measurement for generated sample at index
   addMeasurement(gIndex) {
-    this.generatedSamples[gIndex].measurements.push(
+    this.samples[gIndex].measurements.push(
       new MeasurementModel(this.d.latest.measurementTemplates.find(e => e.name === 'spectrum')._id)
     );
-    console.log(this.d.latest.measurementTemplates.find(e => e.name === 'spectrum'));
     if (!this.charts[gIndex]) {  // add array if there are no charts yet
       this.charts[gIndex] = [];
     }
@@ -387,22 +462,21 @@ export class SampleComponent implements OnInit, AfterContentChecked {
   }
 
   // remove the measurement at the specified index
-  removeMeasurement(gIndex, mIndex) {
-    if (this.generatedSamples[gIndex].measurements[mIndex]._id !== null) {
-      this.api.delete('/measurement/' + this.generatedSamples[gIndex].measurements[mIndex]._id);
+  removeMeasurement(gIndex, mIndex) {  // TODO: do not delete directly but only after confirmation
+    if (this.samples[gIndex].measurements[mIndex]._id !== null) {
+      this.measurementDeleteList.push(this.samples[gIndex].measurements[mIndex]._id);
     }
-    this.generatedSamples[gIndex].measurements.splice(mIndex, 1);
+    this.samples[gIndex].measurements.splice(mIndex, 1);
     this.charts[gIndex].splice(mIndex, 1);
   }
 
-  // remove measurement data at the specified index
+  // clear entered measurement data at the specified index due to template change
   clearMeasurement(gIndex, mIndex) {
     this.charts[gIndex][mIndex][0].data = [];
-    this.generatedSamples[gIndex].measurements[mIndex].values = {};
+    this.samples[gIndex].measurements[mIndex].values = {};
   }
 
   fileToArray(files, gIndex, mIndex, parameter) {
-    console.log(files);
     for (const i in files) {
       if (files.hasOwnProperty(i)) {
         const fileReader = new FileReader();
@@ -410,14 +484,14 @@ export class SampleComponent implements OnInit, AfterContentChecked {
           let index: number = mIndex;
           if (Number(i) > 0) {  // append further spectra
             this.addMeasurement(gIndex);
-            index = this.generatedSamples[gIndex].measurements.length - 1;
+            index = this.samples[gIndex].measurements.length - 1;
           }
-          this.generatedSamples[gIndex].measurements[index].values.device =
-            this.generatedSamples[gIndex].measurements[mIndex].values.device;
-          this.generatedSamples[gIndex].measurements[index].values.filename = files[i].name;
-          this.generatedSamples[gIndex].measurements[index].values[parameter] =
-            fileReader.result.toString().split('\r\n').map(e => e.split(','));
-          this.generateChart(this.generatedSamples[gIndex].measurements[index].values[parameter], gIndex, index);
+          this.samples[gIndex].measurements[index].values.device =
+            this.samples[gIndex].measurements[mIndex].values.device;
+          this.samples[gIndex].measurements[index].values.filename = files[i].name;
+          this.samples[gIndex].measurements[index].values[parameter] =
+            fileReader.result.toString().split('\r\n').map(e => e.split(',')).filter(el => el.length === 2);
+          this.generateChart(this.samples[gIndex].measurements[index].values[parameter], gIndex, index);
         };
         fileReader.readAsText(files[i]);
       }
@@ -457,7 +531,7 @@ export class SampleComponent implements OnInit, AfterContentChecked {
   deleteConfirm(modal) {
     this.modal.open(modal).then(result => {
       if (result) {
-        this.api.delete('/sample/' + this.sample._id);
+        this.api.delete('/sample/' + this.baseSample._id);
         this.router.navigate(['/samples']);
       }
     });
@@ -494,7 +568,6 @@ export class SampleComponent implements OnInit, AfterContentChecked {
         this.api.get<{ _id: string, number: string }[]>(
           '/samples?status[]=validated&status[]=new&page-size=25&sort=number-asc&fields[]=number&fields[]=_id&' +
           'filters[]=%7B%22mode%22%3A%22stringin%22%2C%22field%22%3A%22number%22%2C%22values%22%3A%5B%22' + value + '%22%5D%7D', data => {
-            console.log(data);
             this.sampleReferenceAutocomplete[this.currentSRIndex] = data.map(e => e.number);
             this.sampleReferenceFinds = data;
             observer.next(data.map(e => e.number));
diff --git a/src/app/samples/samples.component.html b/src/app/samples/samples.component.html
index f56420e..ec9a033 100644
--- a/src/app/samples/samples.component.html
+++ b/src/app/samples/samples.component.html
@@ -4,14 +4,16 @@
   <a routerLink="/samples/new" *ngIf="login.isLevel.write">
     <rb-icon-button icon="add" mode="primary" class="space-left">New sample</rb-icon-button>
   </a>
-  <rb-icon-button *ngIf="validation" mode="secondary" icon="close" (click)="validation = false" class="validation-close"
-                  iconOnly></rb-icon-button>
-  <rb-icon-button *ngIf="login.isLevel.dev" [icon]="validation ? 'checkmark' : 'clear-all'"
+  <rb-icon-button *ngIf="sampleSelect === 2" mode="secondary" icon="close" (click)="sampleSelect = 0"
+                  class="validation-close" iconOnly></rb-icon-button>
+  <rb-icon-button *ngIf="login.isLevel.dev" [icon]="sampleSelect === 2 ? 'checkmark' : 'clear-all'"
                   mode="secondary" (click)="validate()">
-    {{validation ? 'Validate' : 'Validation'}}
+    {{sampleSelect === 2 ? 'Validate' : 'Validation'}}
   </rb-icon-button>
 </div>
 
+<!--FILTERS-->
+
 <rb-accordion>
   <rb-accordion-title [open]="false"><span class="rb-ic rb-ic-filter"></span>&nbsp; Filter</rb-accordion-title>
   <rb-accordion-body>
@@ -105,18 +107,23 @@
           </ng-container>
         </div>
       </div>
-
-      <rb-icon-button icon="forward-right" mode="primary" (click)="loadSamples({firstPage: true})">
-        Apply filters
-      </rb-icon-button>
     </form>
+
+    <rb-icon-button icon="forward-right" mode="primary" (click)="loadSamples({firstPage: true})">
+      Apply filters
+    </rb-icon-button>
   </rb-accordion-body>
 </rb-accordion>
 
 
 <ng-container *ngTemplateOutlet="paging"></ng-container>
 
-<rb-loading-spinner class="samples-loading" *ngIf="loading"></rb-loading-spinner>
+<div class="samples-loading" *ngIf="loading">
+  <rb-loading-spinner></rb-loading-spinner>
+  <div>Loading...</div>
+</div>
+
+<!--DOWNLOAD BUTTONS-->
 
 <div class="download space-below" *ngIf="login.isLevel.dev">
   <rb-icon-button class="space-right" icon="download" mode="secondary" [rbModal]="linkModal">
@@ -146,10 +153,12 @@
   </a>
 </div>
 
+<!--TABLE-->
+
 <rb-table class="samples-table" scrollTop ellipsis>
   <tr>
-    <th *ngIf="validation">
-      <rb-form-checkbox name="validate-all" (change)="selectAll($event)">all</rb-form-checkbox>
+    <th *ngIf="sampleSelect">
+      <rb-form-checkbox name="select-all" (change)="selectAll($event)">all</rb-form-checkbox>
     </th>
     <th *ngFor="let key of activeKeys" [title]="key.label">
       <div class="sort-header">
@@ -164,13 +173,16 @@
         </div>
       </div>
     </th>
-    <th *ngIf="login.isLevel.write"></th>
+    <th *ngIf="login.isLevel.write">
+      <span class="rb-ic rb-ic-edit clickable" *ngIf="login.isLevel.dev" (click)="batchEdit()"></span>
+      <span class="rb-ic rb-ic-close clickable" *ngIf="sampleSelect === 1" (click)="sampleSelect = 0"></span>
+    </th>
   </tr>
 
   <tr *ngFor="let sample of samples; index as i" class="clickable" (click)="sampleDetails(sample._id, sampleModal)">
-    <td *ngIf="validation">
+    <td *ngIf="sampleSelect">
       <rb-form-checkbox *ngIf="sample.status !== 'deleted'" [name]="'validate-' + i" (click)="stopPropagation($event)"
-                        [(ngModel)]="sample.validate">
+                        [(ngModel)]="sample.selected">
       </rb-form-checkbox>
     </td>
     <td *ngIf="isActiveKey['number']">{{sample.number}}</td>
@@ -221,6 +233,8 @@
   </div>
 </ng-template>
 
+<!--SAMPLE DETAILS-->
+
 <ng-template #sampleModal>
   <rb-loading-spinner *ngIf="sampleDetailsSample === null; else sampleDetailsTemplate"></rb-loading-spinner>
   <ng-template #sampleDetailsTemplate>
diff --git a/src/app/samples/samples.component.scss b/src/app/samples/samples.component.scss
index b534741..2505628 100644
--- a/src/app/samples/samples.component.scss
+++ b/src/app/samples/samples.component.scss
@@ -237,7 +237,19 @@ textarea.linkmodal {
 
 .samples-loading {
   float: left;
-  transform: scale(0.5);
+  display: grid;
+  grid-template-columns: auto auto;
+  grid-template-rows: 1fr auto 1fr;
+
+  rb-loading-spinner {
+    grid-row: span 3;
+    transform: scale(0.5);
+  }
+
+  & > div {
+    grid-column: 2 / 3;
+    grid-row: 2 / 3;
+  }
 }
 
 .reset-preferences {
diff --git a/src/app/samples/samples.component.ts b/src/app/samples/samples.component.ts
index 8d995ca..08f5b19 100644
--- a/src/app/samples/samples.component.ts
+++ b/src/app/samples/samples.component.ts
@@ -9,6 +9,7 @@ import {LoginService} from '../services/login.service';
 import {ModalService} from '@inst-iot/bosch-angular-ui-components';
 import {DataService} from '../services/data.service';
 import {LocalStorageService} from 'angular-2-local-storage';
+import {Router} from '@angular/router';
 
 // TODO: turn off sort field
 // TODO reset sort when field is excluded
@@ -63,6 +64,7 @@ export class SamplesComponent implements OnInit {
       {field: 'type', label: 'Type', active: false, autocomplete: [], mode: 'eq', values: ['']},
       {field: 'color', label: 'Color', active: false, autocomplete: [], mode: 'eq', values: ['']},
       {field: 'batch', label: 'Batch', active: false, autocomplete: [], mode: 'eq', values: ['']},
+      // {field: 'notes.comment', label: 'Comment', active: false, autocomplete: [], mode: 'eq', values: ['']},
       {field: 'added', label: 'Added', active: false, autocomplete: [], mode: 'eq', values: ['']}
     ]
   };
@@ -78,6 +80,7 @@ export class SamplesComponent implements OnInit {
     {id: 'type', label: 'Type', active: true, sortable: true},
     {id: 'color', label: 'Color', active: false, sortable: true},
     {id: 'batch', label: 'Batch', active: true, sortable: true},
+    // {id: 'notes.comment', label: 'Comment', active: false, sortable: false},
     {id: 'notes', label: 'Notes', active: false, sortable: false},
     {id: 'status', label: 'Status', active: false, sortable: true},
     {id: 'added', label: 'Added', active: true, sortable: true}
@@ -86,7 +89,7 @@ export class SamplesComponent implements OnInit {
   activeKeys: KeyInterface[] = [];
   activeTemplateKeys = {material: [], condition: [], measurements: []};
   sampleDetailsSample: any = null;
-  validation = false;  // true to activate validation mode
+  sampleSelect = 0;  // modes: 0 - no selection, 1 - sample edit selection, 2 - validation selection
   loading = 0;
 
 
@@ -97,7 +100,8 @@ export class SamplesComponent implements OnInit {
     private modalService: ModalService,
     public d: DataService,
     private storage: LocalStorageService,
-    private window: Window
+    private window: Window,
+    private router: Router
   ) {
   }
 
@@ -285,7 +289,7 @@ export class SamplesComponent implements OnInit {
   }
 
   loadPage(delta) {
-    if (!/[0-9]+/.test(delta) || (this.page <= 1 && delta < 0)) {  // invalid delta
+    if (!/[0-9]+/.test(delta) || this.page + delta < 1 || this.page + delta > this.pages) {  // invalid delta
       return;
     }
     this.page += delta;
@@ -414,17 +418,27 @@ export class SamplesComponent implements OnInit {
   }
 
   validate() {
-    if (this.validation) {
+    if (this.sampleSelect) {
       this.samples.forEach(sample => {
-        if (sample.validate) {
+        if (sample.selected) {
           this.api.put('/sample/validate/' + sample._id);
         }
       });
       this.loadSamples();
-      this.validation = false;
+      this.sampleSelect = 0;
     }
     else {
-      this.validation = true;
+      this.sampleSelect = 2;
+    }
+  }
+
+  batchEdit() {
+    if (this.sampleSelect) {
+      this.router.navigate(['/samples/edit/' + this.samples.filter(e => e.selected).map(e => e._id).join(',')]);
+      this.sampleSelect = 0;
+    }
+    else {
+      this.sampleSelect = 1;
     }
   }
 
@@ -442,10 +456,10 @@ export class SamplesComponent implements OnInit {
   selectAll(event) {
     this.samples.forEach(sample => {
       if (sample.status !== 'deleted') {
-        sample.validate = event.target.checked;
+        sample.selected = event.target.checked;
       }
       else {
-        sample.validate = false;
+        sample.selected = false;
       }
     });
   }
diff --git a/src/app/services/api.service.ts b/src/app/services/api.service.ts
index fe875da..c573dc1 100644
--- a/src/app/services/api.service.ts
+++ b/src/app/services/api.service.ts
@@ -5,6 +5,7 @@ import {Observable} from 'rxjs';
 import {ErrorComponent} from '../error/error.component';
 import {ModalService} from '@inst-iot/bosch-angular-ui-components';
 
+// TODO: find solution when client wants to visit subpage but is not logged in to redirect to login without showing request failed errors
 
 @Injectable({
   providedIn: 'root'
diff --git a/src/app/services/data.service.ts b/src/app/services/data.service.ts
index 1313baa..4edba0f 100644
--- a/src/app/services/data.service.ts
+++ b/src/app/services/data.service.ts
@@ -4,6 +4,7 @@ import {ApiService} from './api.service';
 import {MaterialModel} from '../models/material.model';
 import {BaseModel} from '../models/base.model';
 import {UserModel} from '../models/user.model';
+import {ModelItemModel} from '../models/model-item.model';
 
 @Injectable({
   providedIn: 'root'
@@ -15,14 +16,15 @@ export class DataService {
   ) { }
 
   private collectionMap = {
-    materials: {path: '/materials?status=all', model: MaterialModel, type: 'array'},
-    materialSuppliers: {path: '/material/suppliers', model: null, type: 'array'},
-    materialGroups: {path: '/material/groups', model: null, type: 'array'},
+    materials: {path: '/materials?status=all', model: MaterialModel, type: 'idArray'},
+    materialSuppliers: {path: '/material/suppliers', model: null, type: 'idArray'},
+    materialGroups: {path: '/material/groups', model: null, type: 'idArray'},
     materialTemplates: {path: '/template/materials', model: TemplateModel, type: 'template'},
     measurementTemplates: {path: '/template/measurements', model: TemplateModel, type: 'template'},
     conditionTemplates: {path: '/template/conditions', model: TemplateModel, type: 'template'},
-    sampleNotesFields: {path: '/sample/notes/fields', model: TemplateModel, type: 'array'},
-    users: {path: '/users', model: UserModel, type: 'array'},
+    sampleNotesFields: {path: '/sample/notes/fields', model: TemplateModel, type: 'idArray'},
+    users: {path: '/users', model: UserModel, type: 'idArray'},
+    modelGroups: {path: '/model/groups', model: ModelItemModel, type: 'array'},
     user: {path: '/user', model: UserModel, type: 'string'},
     userKey: {path: '/user/key', model: BaseModel, type: 'string'}
   };
@@ -32,6 +34,8 @@ export class DataService {
   id: {[key: string]: {[id: string]: any}} = {};  // data in format _id: data
   d: {[key: string]: any} = {};      // data not in array format
 
+  contact = 'dominic.lingenfelser@bosch.com';
+
   load(collection, f = () => {}) {  // load data
     if (this.arr[collection]) { // data already loaded
       f();
@@ -41,20 +45,8 @@ export class DataService {
         if (this.collectionMap[collection].type !== 'string') {  // array data
           this.arr[collection] = data
             .map(e => this.collectionMap[collection].model ? new this.collectionMap[collection].model().deserialize(e) : e);
-          this.idReload(collection);
-          if (this.collectionMap[collection].type === 'template') {
-            const tmpTemplates = {};
-            this.arr[collection].forEach(template => {
-              if (tmpTemplates[template.first_id]) {  // already found another version
-                if (template.version > tmpTemplates[template.first_id].version) {
-                  tmpTemplates[template.first_id] = template;
-                }
-              }
-              else {
-                tmpTemplates[template.first_id] = template;
-              }
-            });
-            this.latest[collection] = Object.values(tmpTemplates);
+          if (this.collectionMap[collection].type === 'idArray' || this.collectionMap[collection].type === 'template') {
+            this.idReload(collection);
           }
         }
         else {  // not array data
@@ -67,5 +59,19 @@ export class DataService {
 
   idReload(collection) {
     this.id[collection] = this.arr[collection].reduce((s, e) => {s[e._id] = e; return s; }, {});
+    if (this.collectionMap[collection].type === 'template') {
+      const tmpTemplates = {};
+      this.arr[collection].forEach(template => {
+        if (tmpTemplates[template.first_id]) {  // already found another version
+          if (template.version > tmpTemplates[template.first_id].version) {
+            tmpTemplates[template.first_id] = template;
+          }
+        }
+        else {
+          tmpTemplates[template.first_id] = template;
+        }
+      });
+      this.latest[collection] = Object.values(tmpTemplates);
+    }
   }
 }
diff --git a/src/app/services/validation.service.ts b/src/app/services/validation.service.ts
index 47134e2..0deb86e 100644
--- a/src/app/services/validation.service.ts
+++ b/src/app/services/validation.service.ts
@@ -103,6 +103,14 @@ export class ValidationService {
     return {ok: true, error: ''};
   }
 
+  url(data) {
+    const {ignore, error} = Joi.string().uri().validate(data);
+    if (error) {
+      return {ok: false, error: `must be a valid URL`};
+    }
+    return {ok: true, error: ''};
+  }
+
   unique(data, list) {
     const {ignore, error} = Joi.string().allow('').invalid(...list.map(e => e.toString())).validate(data);
     if (error) {
diff --git a/src/styles.scss b/src/styles.scss
index 6ad32c2..fbc3cbc 100644
--- a/src/styles.scss
+++ b/src/styles.scss
@@ -7,9 +7,7 @@ $rb-extended-breakpoints: false;  // whether to use extended breakpoints xxl and
   src: url(/assets/fonts/BoschMono.ttf);
 }
 
-* {
-  margin: 0;
-  padding: 0;
+*, ::after, ::before {
   box-sizing: border-box;
 }