diff --git a/script/users/X-Treme_XPSScan.py b/script/users/X-Treme_XPSScan.py
index 091d8e96..1dbe81f5 100644
--- a/script/users/X-Treme_XPSScan.py
+++ b/script/users/X-Treme_XPSScan.py
@@ -44,7 +44,7 @@ LATENCY = 0.0
 
 ######### X-TREME samples ##############
 
-
+"""
 # front end 4x6 mm2
 # Ephot = 62 eV; if 'ephot' is not specified in the region, it will not be set!!
 REG1 = {'name': '62eV_VBcoarse', 'elo': 49.0, 'ehi': 58.0, 'estep': 0.002, 'epass': 10., 'tstep': 0.5, 'iter': 1, 'slit' : 100, 'cis': True}
@@ -52,7 +52,7 @@ REG1 = {'name': '62eV_VBcoarse', 'elo': 49.0, 'ehi': 58.0, 'estep': 0.002, 'epas
 REGIONS = [REG1]
 
 #REGIONS = [REG1, REG2]
-
+"""
 
 """
 DO NOT DO 80 eV ANY MORE # front end 3x4 mm2
@@ -102,14 +102,17 @@ REG7 = {'name': '810eV_VBzoom', 'elo': 804.0, 'ehi': 806.0, 'estep': 0.005, 'epa
 REGIONS = [REG1, REG2, REG3, REG4b, REG5, REG7]
 """
 
-"""
+
 # Ephot = 1600 eV; if 'ephot' is not specified in the region, it will not be set!!
 # front end 3x4 mm2
-REG1 = {'name': '1600eV_survey', 'elo': 100.0, 'ehi': 1600.0, 'estep': 1.0, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
-REG2 = {'name': '1600eV_Mg1s'  , 'elo': 286.0, 'ehi': 300.0, 'estep': 0.02, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
-REG3 = {'name': '1600eV_Ag3d1' , 'elo': 1219.0, 'ehi': 1231.0, 'estep': 0.02, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
-REGIONS = [REG1, REG2, REG3]
-"""
+REGsurvey = {'name': '1600eV_survey', 'elo': 100.0, 'ehi': 1600.0, 'estep': 0.5, 'epass': 100., 'tstep': 0.25, 'iter': 1, 'slit' : 50, 'cis': True}
+REGMg = {'name': '1600eV_Mg1s'  , 'elo': 286.0, 'ehi': 300.0, 'estep': 0.02, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
+REGAg = {'name': '1600eV_Ag3d1' , 'elo': 1219.0, 'ehi': 1231.0, 'estep': 0.02, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
+REGNa = {'name': '1600eV_Na1s'  , 'elo': 517.0, 'ehi': 531.0, 'estep': 0.02, 'epass': 100., 'tstep': 0.5, 'iter': 1, 'slit' : 30, 'cis': True}
+
+#REGIONS = [REGsurvey, REGMg, REGAg]
+REGIONS = [REGsurvey, REGNa, REGAg]  # for NaCl/Ag
+
 
 
 # list of region dictionaries to execute at each scan position