diff --git a/src/org/labkey/targetedms/view/precursorConflictResolutionView.jsp b/src/org/labkey/targetedms/view/precursorConflictResolutionView.jsp
index 90a66ebdc..a6d3f10a8 100644
--- a/src/org/labkey/targetedms/view/precursorConflictResolutionView.jsp
+++ b/src/org/labkey/targetedms/view/precursorConflictResolutionView.jsp
@@ -271,7 +271,7 @@ function toggleCheckboxSelection(element)
              <!--<td class="representative newPrecursor <%=precursor.getNewPrecursorId()%>"><%=precursor.getNewPrecursorId()%></td>-->
              <td class="representative details-control newPrecursor <%=precursor.getNewPrecursorId()%>">
                 <span class="<%=precursor.getNewPrecursorId()%>_<%=precursor.getOldPrecursorId()%>">
-                     <img src="<%=getWebappURL("_images/plus.gif")%>"/>
+                     <img src="<%=getWebappURL("_images/plus.gif")%>" alt="Expand row details"/>
                  </span>
              </td>
              <td class="representative newPrecursor <%=precursor.getNewPrecursorId()%>">
@@ -291,7 +291,7 @@ function toggleCheckboxSelection(element)
              <!--<td class="oldPrecursor <%=precursor.getNewPrecursorId()%>"><%=precursor.getOldPrecursorId()%></td>-->
              <td class="details-control oldPrecursor <%=precursor.getNewPrecursorId()%>">
                 <span class="<%=precursor.getNewPrecursorId()%>_<%=precursor.getOldPrecursorId()%>">
-                     <img src="<%=getWebappURL("_images/plus.gif")%>"/>
+                     <img src="<%=getWebappURL("_images/plus.gif")%>" alt="Expand row details"/>
                  </span>
              </td>
              <td class="oldPrecursor <%=precursor.getNewPrecursorId()%>">
diff --git a/webapp/TargetedMS/js/QCTrendPlotPanel.js b/webapp/TargetedMS/js/QCTrendPlotPanel.js
index 529153071..5850ed232 100644
--- a/webapp/TargetedMS/js/QCTrendPlotPanel.js
+++ b/webapp/TargetedMS/js/QCTrendPlotPanel.js
@@ -1008,8 +1008,8 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
                 columns: 2,
                 vertical: false,
                 items: [
-                    { boxLabel: 'per replicate', id: 'x-axis-grouping-replicate', name: 'xAxisGrouping', inputValue: 'replicate', checked: this.groupedX === false },
-                    { boxLabel: 'per date', id: 'x-axis-grouping-date', name: 'xAxisGrouping', inputValue: 'date', checked: this.groupedX === true }
+                    { boxLabel: 'per replicate', id: 'x-axis-grouping-replicate', name: 'xAxisGrouping', inputValue: 'replicate', checked: this.groupedX === false, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'X-axis grouping: per replicate'}); } } },
+                    { boxLabel: 'per date', id: 'x-axis-grouping-date', name: 'xAxisGrouping', inputValue: 'date', checked: this.groupedX === true, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'X-axis grouping: per date'}); } } }
                 ],
                 listeners: {
                     scope: this,
@@ -1038,8 +1038,8 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
                 columns: 2,
                 vertical: false,
                 items: [
-                    { boxLabel: 'per precursor', name: 'showPlots', id: 'plots-per-precursor', inputValue: 'per-precursor', checked: this.singlePlot === false },
-                    { boxLabel: 'combined', name: 'showPlots', id: 'plots-combined', inputValue: 'combined', checked: this.singlePlot === true }
+                    { boxLabel: 'per precursor', name: 'showPlots', id: 'plots-per-precursor', inputValue: 'per-precursor', checked: this.singlePlot === false, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Plots: per precursor'}); } } },
+                    { boxLabel: 'combined', name: 'showPlots', id: 'plots-combined', inputValue: 'combined', checked: this.singlePlot === true, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Plots: combined'}); } } }
                 ],
                 listeners: {
                     scope: this,
@@ -1069,8 +1069,8 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
                 columns: 2,
                 vertical: false,
                 items: [
-                    { boxLabel: 'show', id: 'excluded-replicates-show', name: 'excludedSamples', inputValue: 'show', checked: this.showExcluded === true },
-                    { boxLabel: 'hide', id: 'excluded-replicates-hide', name: 'excludedSamples', inputValue: 'hide', checked: this.showExcluded === false }
+                    { boxLabel: 'show', id: 'excluded-replicates-show', name: 'excludedSamples', inputValue: 'show', checked: this.showExcluded === true, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Excluded replicates: show'}); } } },
+                    { boxLabel: 'hide', id: 'excluded-replicates-hide', name: 'excludedSamples', inputValue: 'hide', checked: this.showExcluded === false, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Excluded replicates: hide'}); } } }
                 ],
                 listeners: {
                     scope: this,
@@ -1098,8 +1098,8 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
                 columns: 2,
                 vertical: false,
                 items: [
-                    { boxLabel: 'show', id: 'excluded-precursors-show', name: 'excludedPrecursors', inputValue: 'show', checked: this.showExcludedPrecursors === true },
-                    { boxLabel: 'hide', id: 'excluded-precursors-hide', name: 'excludedPrecursors', inputValue: 'hide', checked: this.showExcludedPrecursors === false }
+                    { boxLabel: 'show', id: 'excluded-precursors-show', name: 'excludedPrecursors', inputValue: 'show', checked: this.showExcludedPrecursors === true, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Excluded precursors: show'}); } } },
+                    { boxLabel: 'hide', id: 'excluded-precursors-hide', name: 'excludedPrecursors', inputValue: 'hide', checked: this.showExcludedPrecursors === false, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Excluded precursors: hide'}); } } }
                 ],
                 listeners: {
                     scope: this,
@@ -1132,8 +1132,8 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
                 columns: 2,
                 vertical: false,
                 items: [
-                    { boxLabel: 'always show', id: 'reference-guide-set-show', name: 'referenceGuideSets', inputValue: 'show', checked: this.showReferenceGS === true },
-                    { boxLabel: 'when in date range', id: 'reference-guide-set-hide', name: 'referenceGuideSets', inputValue: 'hide', checked: this.showReferenceGS === false }
+                    { boxLabel: 'always show', id: 'reference-guide-set-show', name: 'referenceGuideSets', inputValue: 'show', checked: this.showReferenceGS === true, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Reference guide sets: always show'}); } } },
+                    { boxLabel: 'when in date range', id: 'reference-guide-set-hide', name: 'referenceGuideSets', inputValue: 'hide', checked: this.showReferenceGS === false, listeners: { afterrender: function(r) { r.inputEl.set({'aria-label': 'Reference guide sets: when in date range'}); } } }
                 ],
                 listeners: {
                     scope: this,
@@ -1272,10 +1272,10 @@ Ext4.define('LABKEY.targetedms.QCTrendPlotPanel', {
         var btnHtml = '';
 
         btnHtml += '<span class="qc-paging-prev ' + (this.pagingStartIndex > 0 ? 'qc-paging-icon-enabled' : 'qc-paging-icon-disabled')
-                + '"><i class="fa fa-angle-left"></i></span>';
+                + '" role="button" aria-label="Previous page"><i class="fa fa-angle-left" aria-hidden="true"></i></span>';
 
         btnHtml += '<span class="qc-paging-next ' + (this.pagingEndIndex < numOfPrecursors ? 'qc-paging-icon-enabled' : 'qc-paging-icon-disabled')
-                + '"><i class="fa fa-angle-right"></i></span>';
+                + '" role="button" aria-label="Next page"><i class="fa fa-angle-right" aria-hidden="true"></i></span>';
 
         return btnHtml;
     },