Metrohm 2.942.0300, Руководство пользователя, Страница: 44 / 56

5.3 Metrohm Suppressor Module (MSM)
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942 Extension Module Vario ChS-PP (2.942.0300)
NOTICE
If phosphoric acid has been used once as regeneration solution in an IC
system, you will have to continue using phosphoric acid for regenera-
tion. Regenerating it with sulfuric acid again can lead to problems in the
baseline.
CAUTION
Pump tubing made of PVC must not be used for solutions containing
organic solvents.
We recommend using the high-pressure pump for regeneration.
Regenerating the anion suppressor rotor
1 Disconnecting the Metrohm Suppressor Module (MSM) from
the IC system
￭
Disconnect the capillaries of the MSM labeled
regenerant
and
rinsing solution
from the IC system.
2 Regenerating the Metrohm Suppressor Module (MSM)
Regenerate the three suppressor units one after the other for approx.
15 minutes using one of the solutions mentioned above.
￭
Connect the capillary labeled regenerant to the outlet of the
high-pressure pump using a coupling (6.2744.040).
￭
Set the flow of the high-pressure pump to 0.5 mL/min in the soft-
ware.
￭
Connect the regeneration solution to the high-pressure pump.
￭
Switch on the high-pressure pump.
If the pressure decreases during regeneration, slowly increase the
flow of the pump to a maximum of 2 mL/min. When doing so,
make sure that the pressure does not exceed 2 MPa!
￭
After approx. 15 minutes, switch off the high-pressure pump.
￭
In the software, use the Step command to switch to the next
suppressor unit and regenerate it as described above.
￭
As soon as all three suppressor units have been regenerated, dis-
connect the capillary labeled
regenerant from the coupling.