diff --git a/app/packs/src/apps/mydb/elements/details/reactions/propertiesTab/ReactionDetailsProperties.js b/app/packs/src/apps/mydb/elements/details/reactions/propertiesTab/ReactionDetailsProperties.js
index 5895b61eea..c763996dec 100644
--- a/app/packs/src/apps/mydb/elements/details/reactions/propertiesTab/ReactionDetailsProperties.js
+++ b/app/packs/src/apps/mydb/elements/details/reactions/propertiesTab/ReactionDetailsProperties.js
@@ -16,18 +16,11 @@ import { EditUserLabels } from 'src/components/UserLabels';
 export default class ReactionDetailsProperties extends Component {
   constructor(props) {
     super(props);
-    props.reaction.convertDurationDisplay();
 
     this.handleOnReactionChange = this.handleOnReactionChange.bind(this);
     this.handleOnSolventSelect = this.handleOnSolventSelect.bind(this);
   }
 
-  // eslint-disable-next-line camelcase
-  UNSAFE_componentWillReceiveProps(nextProps) {
-    if (!nextProps.reaction) { return; }
-    nextProps.reaction.convertDurationDisplay();
-  }
-
   handleOnReactionChange(reaction) {
     this.props.onReactionChange(reaction);
   }
diff --git a/app/packs/src/apps/mydb/elements/details/reactions/schemeTab/ReactionDetailsDuration.js b/app/packs/src/apps/mydb/elements/details/reactions/schemeTab/ReactionDetailsDuration.js
index 38177dde7d..f4dab39dd6 100644
--- a/app/packs/src/apps/mydb/elements/details/reactions/schemeTab/ReactionDetailsDuration.js
+++ b/app/packs/src/apps/mydb/elements/details/reactions/schemeTab/ReactionDetailsDuration.js
@@ -8,18 +8,11 @@ import { copyToClipboard } from 'src/utilities/clipboard';
 export default class ReactionDetailsDuration extends Component {
   constructor(props) {
     super(props);
-    props.reaction.convertDurationDisplay();
     this.setCurrentTime = this.setCurrentTime.bind(this);
     this.copyToDuration = this.copyToDuration.bind(this);
     this.handleDurationChange = this.handleDurationChange.bind(this);
   }
 
-  // eslint-disable-next-line camelcase
-  UNSAFE_componentWillReceiveProps(nextProps) {
-    if (!nextProps.reaction) { return; }
-    nextProps.reaction.convertDurationDisplay();
-  }
-
   setCurrentTime(type) {
     const currentTime = new Date().toLocaleString('en-GB').split(', ').join(' ');
     const { reaction } = this.props;
diff --git a/app/packs/src/models/Reaction.js b/app/packs/src/models/Reaction.js
index 74f23ed3d2..9390ed19b5 100644
--- a/app/packs/src/models/Reaction.js
+++ b/app/packs/src/models/Reaction.js
@@ -309,6 +309,21 @@ export default class Reaction extends Element {
   }
   
   get durationDisplay() {
+    if (!this._durationDisplay || this._durationDisplay.memValue === '') {
+      const duration = this._duration;
+      const m = duration && duration.match(/(\d+\.?(\d+)?)\s+([\w()]+)/)
+      if (m) {
+        this._durationDisplay = {
+          dispUnit: m[3],
+          memUnit: m[3],
+          dispValue: m[1],
+          memValue: m[1],
+        };
+      } else {
+        this._durationDisplay = { ...DurationDefault };
+      }
+    }
+
     return this._durationDisplay;
   }
   
@@ -316,8 +331,8 @@ export default class Reaction extends Element {
     const { fromStartStop, nextUnit, nextValue } = newDuration;
     const {
       dispUnit, memUnit, memValue
-    } = this._durationDisplay || {};
-    
+    } = this.durationDisplay || {};
+
     if (fromStartStop) {
       const d = durationDiff(this.timestamp_start, this.timestamp_stop);
       if (d) {
@@ -366,27 +381,9 @@ export default class Reaction extends Element {
   }
   
   get durationUnit() {
-    return this._durationDisplay.dispUnit;
+    return this.durationDisplay.dispUnit;
   }
-  
-  convertDurationDisplay() {
-    const duration = this._duration;
-    if (this._durationDisplay && this._durationDisplay.memValue !== '') { return null; }
-    const m = duration && duration.match(/(\d+\.?(\d+)?)\s+([\w()]+)/)
-    if (m) {
-      this._durationDisplay = {
-        dispUnit: m[3],
-        memUnit: m[3],
-        dispValue: m[1],
-        memValue: m[1],
-        ...this._durationDisplay
-      };
-      return null;
-    }
-    this._durationDisplay = { ...DurationDefault };
-    return null;
-  }
-  
+
   // Reaction Temperature
   
   get temperature_display() {