Metrohm Suppressor Module (Msm); Connecting The Suppressor; Figure 24 Suppressor - Connection Capillaries - Metrohm 882 Compact IC plus Manual

3.14 Metrohm Suppressor Module (MSM)

3.14 Metrohm Suppressor Module (MSM)
3.14.1

Connecting the suppressor

42 ￭￭￭￭￭￭￭￭
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
2R-SO - H + + Na CO
3 2 3
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.
8
1
7
Figure 24 Suppressor – connection capillaries
- Na + + H O + CO
3 2 2
3
1
2
3
6
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
4
2
5
882 Compact IC plus – Anion