Index: firmware/App/Modes/ModeTxParams.c
===================================================================
diff -u -r44756f72f2b493444495fcb3067c691dda9a7920 -r52e1d4487a69a1ef0475321084527c0ba86c0892
--- firmware/App/Modes/ModeTxParams.c	(.../ModeTxParams.c)	(revision 44756f72f2b493444495fcb3067c691dda9a7920)
+++ firmware/App/Modes/ModeTxParams.c	(.../ModeTxParams.c)	(revision 52e1d4487a69a1ef0475321084527c0ba86c0892)
@@ -92,6 +92,12 @@
 } DIALIN_SET_TX_PARAM_PAYLOAD_T;
 #pragma pack(pop)
 
+/// Dialyzer volume data record structure.
+typedef struct {
+    U32 bloodVolume;                                                    ///< Blood volume of the dialyzer in mL.
+    U32 dialysateVolume;                                                ///< Dialysate volume of the dialyzer in mL.
+} DIALYZER_VOLUME_DATA_T;
+
 // ********** private data **********
 
 static TD_TREATMENT_PARAMS_MODE_STATE_T currentTreatmentParamsState;    ///< Current state of treatment parameters mode state machine.
@@ -121,6 +127,16 @@
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=8.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_UF_VOLUME
 };
 
+/// Dialyzer volumes (blood and dialysate) table in mL for each type of dialyzer.
+const DIALYZER_VOLUME_DATA_T dialyzerVolumeTable[ NUM_OF_DIALYZER_TYPES ] =
+    { {  82, 170 },                                                       // DIALYZER_TYPE_BBRAUN_PRO_13H
+      { 100, 200 },                                                       // DIALYZER_TYPE_BBRAUN_PRO_16H
+      { 120, 257 },                                                       // DIALYZER_TYPE_BBRAUN_PRO_19H
+      {  87, 233 },                                                       // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F160NRE
+      { 102, 280 },                                                       // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F180NRE
+      { 113, 348 },                                                       // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F200NRE
+      { 142, 304 } };                                                     // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F250NRE
+
 // Current treatment parameter values
 static CRITICAL_DATA_T treatmentParameters[ NUM_OF_TREATMENT_PARAMS ];  ///< Treatment parameters.
 static CRITICAL_DATAS_T stagedParams[ NUM_OF_TREATMENT_PARAMS ];        ///< Temporary staged treatment parameters for validation and awaiting user confirmation.
@@ -891,6 +907,58 @@
 
 /*********************************************************************//**
  * @brief
+ * The getDialyzerBloodVolume function gets the blood side volume (in mL)
+ * for a given dialyzer type.
+ * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if given dialyzer type is invalid
+ * @details \b Inputs : dialyzerVolumeTable[]
+ * @details \b Outputs : none
+ * @param dialyzer The type of dialyzer to get the blood side volume for
+ * @return The blood side volume for the given dialyzer type
+ *************************************************************************/
+U32 getDialyzerBloodVolume( DIALYZER_TYPE_T dialyzer )
+{
+    U32 result = 0;
+
+    if ( dialyzer < NUM_OF_DIALYZER_TYPES )
+    {
+        result = dialyzerVolumeTable[ dialyzer ].bloodVolume;
+    }
+    else
+    {
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_TD_SOFTWARE_FAULT, SW_FAULT_ID_DIALYZER_TYPE_INVALID1, (U32)dialyzer )
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The getDialyzerDialysateVolume function gets the dialysate side volume (in mL)
+ * for a given dialyzer type.
+ * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if given dialyzer type is invalid
+ * @details \b Inputs : dialyzerVolumeTable[]
+ * @details \b Outputs : none
+ * @param dialyzer The type of dialyzer to get the dialysate side volume for
+ * @return The dialysate side volume for the given dialyzer type
+ *************************************************************************/
+U32 getDialyzerDialysateVolume( DIALYZER_TYPE_T dialyzer )
+{
+    U32 result = 0;
+
+    if ( dialyzer < NUM_OF_DIALYZER_TYPES )
+    {
+        result = dialyzerVolumeTable[ dialyzer ].dialysateVolume;
+    }
+    else
+    {
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_TD_SOFTWARE_FAULT, SW_FAULT_ID_DIALYZER_TYPE_INVALID2, (U32)dialyzer )
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
  * The isTreatmentParamInRange function determines whether a given treatment
  * parameter is in range.
  * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if given param is invalid