Metrohm 883 Basic IC plus - Suppressor Installation and Connection

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3 Installation
883 Basic IC plus
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31
3.13 Suppressor
3.13.1 General information on the suppressor
The suppressor is used for chemical suppression during anion analysis. It is
pressure-stable, robust and resistant to solvents. It consists of 3 suppressor
units, which are used for suppression, regenerated with sulfuric acid and
rinsed with ultrapure water in rotation.
Analyzing special environmental samples may require using phosphoric
acid for regeneration.
Suppression reaction in the suppressor
When using a carbonate eluent, the following reaction (amongst others)
occurs in the suppressor:
R-SO
3
–
H
+
+ NaHCO
3
/Na
2
CO
3
➙ R-SO
3
–
Na
+
+ H
2
O + CO
2
3.13.2 Installing the suppressor
Inserting the MSM rotor into the adapter
You need the adapter (6.2842.020) in order to insert the rotor into the
suppressor drive.
1
Inserting the MSM rotor into the adapter
CAUTION
An incorrectly inserted rotor may be destroyed during start-up.
￭ Clean the sealing surface of the rotor with ethanol using a lint-
free cloth.