5.3 Metrohm Suppressor Module (MSM)
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942 Extension Module Vario ChS-PP (2.942.0300)
2 Regenerating the first cation suppressor unit
Rinse the system with eluent until the suppressor unit is completely
exhausted (indicated by a significant increase in conductivity). This
can take up to 240 minutes under standard conditions.
3 Regenerating the second cation suppressor unit
In the software, use the
Step
command to switch to the next sup-
pressor unit. Repeat step 2.
4 Regenerating the third cation suppressor unit
In the software, use the
Step
command to switch to the next sup-
pressor unit. Repeat step 2.
5 Restoring the regeneration solution
As soon as all three suppressor units are completely exhausted,
restore the regeneration solution feed.
6 Equilibrating the system
Equilibrate the system as usual (
see chapter "Conditioning" in the
manual for the ion chromatograph
).
5.3.3.4
Cleaning the Metrohm Suppressor Module
(MSM)
In the following cases, it may be necessary to clean the Metrohm Suppres-
sor Module (MSM):
￭
Increased backpressure at the MSM's connection tubing.
￭
Irremediable blockage of the MSM (solutions can no longer be pum-
ped through the MSM).
￭
Irremediable jamming of the MSM (MSM can no longer be switched
over).
Cleaning the Metrohm Suppressor Module (MSM)
1 Disconnecting the Metrohm Suppressor Module (MSM) from
the IC system
￭
Switch off the instrument.
￭
Disconnect all capillaries of the MSM from the IC system.
2 Dismantling the Metrohm Suppressor Module (MSM)
￭
Unscrew the union nut