Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rf0fc30b9706c6fac65f16bdbf0a7661ec88c1b78 -rb87bac344f39b289e83d4794fba4e53cf3dac94a
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision f0fc30b9706c6fac65f16bdbf0a7661ec88c1b78)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision b87bac344f39b289e83d4794fba4e53cf3dac94a)
@@ -149,7 +149,7 @@
     BOOL isDialysateGoodToDeliver          = getDialysateGoodToDeliverStatus();
     F32 bicarbConvFactor                   = BICARBONATE_CONVERSION_FACTOR;
     F32 presUFVolumeL                      = 0.0F;
-    F32 presUFRateLHr                      = 0.0F;
+    F32 presUFRateMlMin                    = 0.0F;
     U32 ddSubMode                          = getDDSubMode();
     TD_PRE_TREATMENT_MODE_STATE_T state    = TD_PRE_TREATMENT_CONFIRM_RX_STATE;
     DD_OP_MODE_T ddOpMode                  = getDDOpMode();
@@ -161,9 +161,9 @@
         if ( ( ddOpMode == DD_MODE_PREG ) && ( ddSubMode == DD_PRE_GEN_DIALYSATE_WAIT_FOR_GEND ) )
         {
             presUFVolumeL = getTreatmentParameterF32( TREATMENT_PARAM_UF_VOLUME );
-            presUFRateLHr = presUFVolumeL / ( (F32)getTreatmentParameterU32( TREATMENT_PARAM_TREATMENT_DURATION ) / (F32)MIN_PER_HOUR );
+            presUFRateMlMin = ( presUFVolumeL * (F32)ML_PER_LITER ) / (F32)getTreatmentParameterU32( TREATMENT_PARAM_TREATMENT_DURATION );
             // Direct DD to generate dialysate and bypass while priming blood
-            cmdStartGenerateDialysate( (F32)getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW ), presUFRateLHr,
+            cmdStartGenerateDialysate( (F32)getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW ), presUFRateMlMin,
                                        getTreatmentParameterF32( TREATMENT_PARAM_DIALYSATE_TEMPERATURE ), TRUE,
                                        getTreatmentParameterF32( TREATMENT_PARAM_ACID_CONCENTRATE_CONV_FACTOR ),
                                        bicarbConvFactor,