diff --git a/js/concentration-api-routes.js b/js/concentration-api-routes.js
index 0456601..c9f50a8 100644
--- a/js/concentration-api-routes.js
+++ b/js/concentration-api-routes.js
@@ -37,6 +37,8 @@ define( function( require ) {
 
     // TODO: This should probably use a surrogate instead of getting the entire Solute value from the sim
     // TODO: I am surprised that save/load works--if reference equality was used, this would fail.
-    'concentrationScreen.solute': 'concentrationScreen.model.solute'
+    'concentrationScreen.solute': 'concentrationScreen.model.solute',
+
+    'concentrationScreen.shaker.location': 'concentrationScreen.model.shaker.locationProperty'
   };
 } );
diff --git a/js/concentration-api.js b/js/concentration-api.js
index cb83928..27428b9 100644
--- a/js/concentration-api.js
+++ b/js/concentration-api.js
@@ -91,6 +91,9 @@ define( function( require ) {
     }
   };
 
+  var Vector2 = {
+    name: 'Vector2'
+  };
   // 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.
@@ -104,6 +107,9 @@ define( function( require ) {
     'concentrationScreen.solute': {
       type: Property( 'string' )
     },
+    'concentrationScreen.shaker.location': {
+      type: Property( Vector2 )
+    },
     'concentrationScreen.resetAllButton': {
       type: ResetAllButton
     },