diff --git a/js/concentration-api-routes.js b/js/concentration-api-routes.js
index fff6f0c..a2ba412 100644
--- a/js/concentration-api-routes.js
+++ b/js/concentration-api-routes.js
@@ -11,6 +11,7 @@ define( function( require ) {
   // Mapping from Unique ID to the location in the code
   return {
     'concentrationScreen.resetAllButton': 'concentrationScreen.view.resetAllButton',
+    'concentrationScreen.removeSoluteButton': 'concentrationScreen.view.removeSoluteButton',
     'concentrationScreen.solidRadioButton': 'concentrationScreen.view.soluteControls.soluteFormNode.shakerButton',
     'concentrationScreen.solutionRadioButton': 'concentrationScreen.view.soluteControls.soluteFormNode.dropperButton',
     'concentrationScreen.evaporationSlider': 'concentrationScreen.view.evaporationControl.slider',
diff --git a/js/concentration-api.js b/js/concentration-api.js
index ceee7d0..0742505 100644
--- a/js/concentration-api.js
+++ b/js/concentration-api.js
@@ -60,6 +60,16 @@ define( function( require ) {
     parent: Node // Also a special case
   };
 
+  var RadioButton = {
+    name: 'RadioButton',
+    parent: 'Node'
+  };
+
+  var Slider = {
+    name: 'Slider',
+    parent: 'Node'
+  };
+
   // Use explicit names for id keys so they will match what researchers see in data files
   // Use id and type instead of componentID and typeID to simplify things for researchers
   // Use a map so that JS will help us check that there are no duplicate names.
@@ -67,14 +77,17 @@ define( function( require ) {
     'concentrationScreen.resetAllButton': {
       type: ResetAllButton
     },
+    'concentrationScreen.removeSoluteButton': {
+      type: Button
+    },
     'concentrationScreen.solidRadioButton': {
-      type: 'RadioButton'
+      type: RadioButton
     },
     'concentrationScreen.solutionRadioButton': {
-      type: 'RadioButton'
+      type: RadioButton
     },
     'concentrationScreen.evaporationSlider': {
-      type: 'Slider'
+      type: Slider
     },
     'concentrationScreen.drainFaucet': {
       type: Faucet