Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -r1d07de4e970f54f2ae1786ef546cf5567df9ba8e -r10c0ce336dc810a3d75d91cb2e14fc32e0e9f100
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 1d07de4e970f54f2ae1786ef546cf5567df9ba8e)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 10c0ce336dc810a3d75d91cb2e14fc32e0e9f100)
@@ -104,6 +104,8 @@
 #define DOP_GEAR_RATIO                          32.0F           ///< Pump motor to pump gear ratio.
 #define DOP_PWM_ZERO_OFFSET                     0.1F            ///< 10% PWM duty cycle = zero speed.
 #define DOP_100_PCT_PWM_RPM_RANGE               4000.0F         ///< 10-90% PWM range yields 0-3,200 RPM range.  Full 100% PWM range would yield 4,000 RPM range.
+#define DOP_RATE_CORRECTION_SCALAR              0.08F           ///< Scalar for estimating DPo rate correction offset based on target Qd.
+#define DOP_RATE_CORRECTION_OFFSET              25.0F           ///< Offset for estimating DPo rate correction offset based on target Qd.
 
 /// Macro converts a flow rate to an estimated PWM duty cycle %.
 #define DOP_PWM_FROM_ML_PER_MIN(rate)           ( ( ( rate ) * 0.0009F ) + 0.0972F + DOP_PWM_ZERO_OFFSET )
@@ -280,6 +282,13 @@
         {
             pwmDC = ( 0 == flowRate ? DOP_PWM_ZERO_OFFSET : DOP_PWM_FROM_ML_PER_MIN( (F32)flowRate ) );
         }
+        else
+        {   // if rate correction offset not yet set, set it based on target dialysate flow rate
+            if ( fabs( dopRateCorrectionOffset ) < NEARLY_ZERO )
+            {
+                dopRateCorrectionOffset = (F32)getTargetDialInFlowRate() * DOP_RATE_CORRECTION_SCALAR + DOP_RATE_CORRECTION_OFFSET;
+            }
+        }
         // Don't interrupt pump control unless rate or mode is changing
         if ( ( fabs( pwmDC - dialOutPumpPWMDutyCyclePct ) > NEARLY_ZERO ) || ( mode != dialOutPumpControlMode ) )
         {
@@ -375,6 +384,19 @@
 
 /*********************************************************************//**
  * @brief
+ * The resetDialOutRateOffset function resets the dialysate outlet pump
+ * rate correction offset.  Call this function before starting a new treatment.
+ * @details Inputs: none
+ * @details Outputs: dopRateCorrectionOffset
+ * @return none
+ *************************************************************************/
+void resetDialOutRateOffset( void )
+{
+    dopRateCorrectionOffset = 0.0F;
+}
+
+/*********************************************************************//**
+ * @brief
  * The setDialOutUFVolumes function sets the ultrafiltration reference and
  * measured total volumes (in mL).
  * @details Inputs: none