Index: firmware/App/Services/TxParams.c
===================================================================
diff -u -r69c276212d96dbf22e4684e8d95b087ae7a9d11b -ra67fbb440e081b87925ac7ac0cb892fe3a8d4b37
--- firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision 69c276212d96dbf22e4684e8d95b087ae7a9d11b)
+++ firmware/App/Services/TxParams.c	(.../TxParams.c)	(revision a67fbb440e081b87925ac7ac0cb892fe3a8d4b37)
@@ -84,7 +84,7 @@
 typedef struct
 {
     BOOL accepted;                                                      ///< Command accepted.
-    U32  reason[ NUM_OF_TREATMENT_PARAMS - 1 ];                         ///< Rejection reason codes; 1 for each parameter.
+    U32  reason[ NUM_OF_TREATMENT_PARAMS ];                             ///< Rejection reason codes; 1 for each parameter.
 } TREATMENT_PARAMS_VAL_RESP_DATA_PAYLOAD_T;
 
 /// Record structure for response to validate ultrafiltration volume
@@ -127,7 +127,7 @@
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=2.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_HEPARIN_BOLUS_VOLUME
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=3.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_HEPARIN_DELIVERY_RATE
     { CRITICAL_DATA_TYPE_F32, {.sFlt=35.0}, {.sFlt=38.0}, {.sFlt=37.0} }, // TREATMENT_PARAM_DIALYSATE_TEMPERATURE
-    { CRITICAL_DATA_TYPE_F32, {.sFlt=0.10}, {.sFlt=0.20}, {.sFlt=0.20} }, // TREATMENT_PARAM_ACID_CONCENTRATE_CONV_FACTOR  // TODO
+    { CRITICAL_DATA_TYPE_F32, {.sFlt=0.00}, {.sFlt=0.20}, {.sFlt=0.20} }, // TREATMENT_PARAM_ACID_CONCENTRATE_CONV_FACTOR  // TODO
     { CRITICAL_DATA_TYPE_F32, {.sFlt=2.0},  {.sFlt=500.0},{.sFlt=50.0} }, // TREATMENT_PARAM_PRE_WEIGHT
     { CRITICAL_DATA_TYPE_F32, {.sFlt=2.0},  {.sFlt=500.0},{.sFlt=50.0} }, // TREATMENT_PARAM_EST_TARGET_WEIGHT
     { CRITICAL_DATA_TYPE_F32, {.sFlt=0.0},  {.sFlt=8.0},  {.sFlt=0.0}  }, // TREATMENT_PARAM_UF_VOLUME
@@ -160,9 +160,9 @@
       { 142, 304 } };                                                     // DIALYZER_TYPE_FRESENIUS_OPTIFLUX_F250NRE
 
 /// Acid concentration conversion factors for each acid type
-const F32 ACID_CONVERSION_FACTOR[ MAX_ACID_CONC_TYPES ] = { 0.1119255F,
-                                                            0.1131362F,
-                                                            0.1143568F,
+const F32 ACID_CONVERSION_FACTOR[ MAX_ACID_CONC_TYPES ] = { 0.11192F,
+                                                            0.11313F,
+                                                            0.11435F,
                                                             0.0F,
                                                             0.0F,
                                                             0.0F,
@@ -576,7 +576,7 @@
     // check for float type params
     else
     {
-        if ( stagedParams[ param ].sFlt != (F32)NEARLY_ZERO )
+        if ( stagedParams[ param ].sFlt > NEARLY_ZERO )
         {
             result = FALSE;
         }
@@ -610,7 +610,7 @@
     else
     {
         // Range check treatment parameters excluding treatment modality and up to (but not including) UF volume
-        for ( param = TREATMENT_PARAM_HDF_DILUTION; param < TREATMENT_PARAM_UF_VOLUME; param++ )
+        for ( param = TREATMENT_PARAM_HDF_DILUTION; param < NUM_OF_TREATMENT_PARAMS; param++ )
         {
             reasons[ param ] = REQUEST_REJECT_REASON_NONE;