Index: DGDefs.h
===================================================================
diff -u -r46451dc6c2bcbf4ff9266ad8d8b4dce544701a10 -rb0fb29d6d6958c756aa2062032c38027fe953ea2
--- DGDefs.h	(.../DGDefs.h)	(revision 46451dc6c2bcbf4ff9266ad8d8b4dce544701a10)
+++ DGDefs.h	(.../DGDefs.h)	(revision b0fb29d6d6958c756aa2062032c38027fe953ea2)
@@ -7,8 +7,8 @@
 *
 * @file    DGDefs.h
 *
-* @author  (last)      Bill Bracken
-* @date    (last)      17-Jan-2023
+* @author  (last)      Dara Navaei
+* @date    (last)      02-Feb-2023
 *
 * @author  (original)  Sean Nash
 * @date    (original)  29-May-2020
@@ -216,6 +216,7 @@
     DG_DISINFECT_FLUSH_STATE = 0,                       ///< DG disinfect flush
     DG_DISINFECT_HEAT_STATE,                            ///< DG disinfect heat
     DG_DISINFECT_CHEM_STATE,                            ///< DG disinfect chemical
+    DG_DISINFECT_CHEM_FLUSH_STATE,                      ///< DG disinfect chemical flush
     DG_DISINFECT_NOT_RUNNING_STATE,                     ///< DG disinfect not running
     NUM_OF_DG_DISINFECT_STATES                          ///< Number of DG disinfect states
 };
@@ -304,6 +305,9 @@
     DG_HEAT_DISINFECT_STATE_CANCEL_BASIC_PATH,                  ///< Heat disinfect, cancel mode basic path state
     DG_HEAT_DISINFECT_STATE_CANCEL_WATER_PATH,                  ///< Heat disinfect, cancel mode water path state
     DG_HEAT_DISINFECT_STATE_COMPLETE,                           ///< Heat disinfect, complete state
+#ifndef _RELEASE_
+    DG_NELSON_HEAT_DISINFECT_STATE_FILL_R1_WITH_WATER,
+#endif
     NUM_OF_DG_HEAT_DISINFECT_STATES                             ///< Number of heat disinfect mode states
 };
 typedef enum DG_Heat_States DG_HEAT_DISINFECT_STATE_T;          ///< Type for DG heat disinfect states enumeration
@@ -632,4 +636,19 @@
 
 /**@}*/
 
+#ifndef _RELEASE_
+///Nelson lab disinfect efficacy support
+typedef enum Nelson_States
+{
+    NELSON_NONE = 0,                                                    // Nelson none.
+    NELSON_INOCULATE,                                                   // Nelson inoculate.
+    NELSON_HEAT_DISINFECT,                                              // Nelson heat disinfect.
+    NELSON_POS_CONTROL_CHEM_DISINFECT,                                  // Nelson positive control chemical disinfect.
+    NELSON_POS_CONTROL_HEAT_DISINFECT,                                  // Nelson positive control heat disinfect.
+    NELSON_CHEM_DISINFECT,                                              // Nelson chemical disinfect.
+    NELSON_DRAIN_SAMPLES,                                               // Nelson drain sample.
+    NUM_OF_NELSON_SUPPORT                                               // Number of Nelson supports.
+} NELSON_SUPPORT_T;
 #endif
+
+#endif