1 connecting the suppressor, 14 metrohm suppressor module (msm), Connecting the suppressor – Metrohm 882 Compact IC plus – Anion User Manual
Page 52: Figure 24, Suppressor – connection capillaries
3.14 Metrohm Suppressor Module (MSM)
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882 Compact IC plus – Anion
3.14
Metrohm Suppressor Module (MSM)
The MSM is used for chemical suppression during anion analysis with con-
ductivity detection or UV/VIS detection. It consists of 3 suppressor units in
total, which are, in rotation, used for suppression – regenerated with
100 mmol/L sulfuric acid – rinsed with ultrapure water.
Suppression reaction in the MSM
When using a carbonate eluent, the following reaction (amongst others)
occurs in the MSM:
2R-SO
3
-
H
+
+ Na
2
CO
3
➙ 2R-SO
3
-
Na
+
+ H
2
O + CO
2
3.14.1
Connecting the suppressor
The three inputs and outputs of the suppressor units, numbered with 1, 2
and 3 on the connecting piece, each have 2 fixed mounted PTFE capilla-
ries.
1
3
2
3
4
5
6
7
8
2
1
Figure 24
Suppressor – connection capillaries