Index: firmware/App/Controllers/Ultrafiltration.c
===================================================================
diff -u -rd748813399d38ef5b71d760e327e368cc82d7a38 -rb689a4627e86e263cb69e83b91e80802bf411c92
--- firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision d748813399d38ef5b71d760e327e368cc82d7a38)
+++ firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision b689a4627e86e263cb69e83b91e80802bf411c92)
@@ -239,8 +239,8 @@
 {
     if ( ( ++currentUFCompCounter >= UF_COMP_INTERVAL ) || ( TRUE == isUFRateUpdated ) )
     {
-        F32 freshDensity            = ( COMP_SLOPE * getD4AverageTemperature() ) + COMP_INTERCEPT;         // Fresh side dialysate density
-        F32 spentDensity            = ( COMP_SLOPE * getD50AverageTemperature() ) + COMP_INTERCEPT;        // spent side dialysate density
+        F32 freshDensity            = ( COMP_SLOPE * getFilteredTemperatureValue( D4_TEMP ) ) + COMP_INTERCEPT;         // Fresh side dialysate density
+        F32 spentDensity            = ( COMP_SLOPE * getFilteredTemperatureValue( D50_TEMP ) ) + COMP_INTERCEPT;        // spent side dialysate density
         F32 compFreshFlowrate       = getTDDialysateFlowrate() * freshDensity;                             // Qd * fresh density
         F32 compSpentFlowrate       = getTDDialysateFlowrate() * spentDensity;                             // Qd * spent density
         F32 balancingError          = compFreshFlowrate - compSpentFlowrate;                               // Error in g/min