Index: firmware/App/Controllers/Ultrafiltration.c
===================================================================
diff -u -r25371dc5442fafdc0b138b4afe034b2f31ca3d1e -reaeff603027c54d0be5171d519710942672ef623
--- firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision 25371dc5442fafdc0b138b4afe034b2f31ca3d1e)
+++ firmware/App/Controllers/Ultrafiltration.c	(.../Ultrafiltration.c)	(revision eaeff603027c54d0be5171d519710942672ef623)
@@ -249,13 +249,13 @@
         // Fresh side dialysate density
         if ( TRUE == getTestConfigStatus( TEST_CONFIG_DD_FP_ENABLE_BETA_1_0_HW ) )
         {
-            freshDensity = ( COMP_SLOPE * getD4AverageTemperature() ) + COMP_INTERCEPT;
+            freshDensity = ( COMP_SLOPE * getFilteredTemperatureValue( D4_TEMP ) ) + COMP_INTERCEPT;
         }
         else
         {
-            freshDensity = ( COMP_SLOPE * getD99AverageTemperature() ) + COMP_INTERCEPT;
+            freshDensity = ( COMP_SLOPE * getFilteredTemperatureValue( D99_TEMP ) ) + COMP_INTERCEPT;
         }
-        spentDensity        = ( COMP_SLOPE * getD50AverageTemperature() ) + COMP_INTERCEPT;        // spent side dialysate density
+        spentDensity        = ( COMP_SLOPE * getFilteredTemperatureValue( D50_TEMP ) ) + COMP_INTERCEPT;        // spent side dialysate density
         compFreshFlowrate   = getTDDialysateFlowrate() * freshDensity;                             // Qd * fresh density
         compSpentFlowrate   = getTDDialysateFlowrate() * spentDensity;                             // Qd * spent density
         balancingError      = compFreshFlowrate - compSpentFlowrate;                               // Error in g/min