Thermo Scientific Orion DUAL STAR User Manual page 64

Incremental Techniques
Electrode D and Slope for ncremental Techniques
The meter uses the electrode ID to determine the valence of the ion of interest
and the theoretical slope of the electrode . The following table shows the
electrode ID options and their corresponding valence and theoretical slope values .
Electrode Valence
D Number
pH +1
Fluoride -1
(F¯)
Ammonia -1
(NH )
3
Ammonium +1
(NH )
+
4
Nitrate -1
(NO ¯)
3
Nitrite -1
(NO ¯)
2
Sulfide -2
(S )
-2
Chloride -1
(Cl¯)
Chlorine +2
(Cl )
2
Bromide -1
(Br¯)
Iodide -1
(I¯)
Cyanide -1
(CN¯)
Sodium +1
(Na )
+
Potassium +1
(K )
+

Theoretical
Slope
+59.16
-59.16
-59.16
+59.16
-59.16
-59.16
-29.58
-59.16
+29.58
-59.16
-59.16
-59.16
+59.16
+59.16
Thermo Scientific Orion DUAL STAR
Electrode Valence
D Number
Calcium +2
(Ca )
+2
Silver +1
(Ag )
+
Copper +2
(Cu )
+2
Lead +2
(Pb )
+2
Cadmium +2
(Cd )
+2
Perchlorate -1
(ClO ¯)
4
Fluoroborate -1
(BF ¯)
4
Thiocyanate -1
(SCN¯)
Nitrogen +1
Oxide (NO )
X
Carbon +1
Dioxide (CO )
2
Monovalent +1
Cation (X )
+
Divalent +2
Cation (X )
+2
Monovalent -1
Anion (X¯)
Divalent -2
Anion (X )
-2
pH/ISE Meter User Guide
™
Theoretical
Slope
+29.58
+59.16
+29.58
+29.58
+29.58
-59.16
-59.16
-59.16
+59.16
+59.16
+59.16
+29.58
-59.16
-29.58