Metrohm 850 Professional IC AnCat MCS User Manual download pdf (Page 98)

4.11 Metrohm Suppressor Module (MSM)

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850 Professional IC – AnCat – MCS

In order to record every new chromatogram under comparable condi-

tions, you should normally work with a freshly regenerated suppressor.

Caution

The MSM must never be switched over in a dry state, as there is a risk

of jamming. If the MSM is in a dry state, the MSM must be rinsed for at

least 5 minutes before it may be switched over.

Caution

In the case of reduced capacity or high backpressure, the MSM must be

regenerated (see Chapter 4.11.3.1, page 88), cleaned (see Chapter

4.11.3.2, page 89) or replaced (see Chapter 4.11.3.3, page 92).

4.11.3 Maintenance

4.11.3.1

Regenerating the MSM

If the suppressor units are loaded for a longer period with certain heavy

metals (e.g. iron) or organic impurities, these can no longer be completely

removed with the regeneration solution (50 mmol/L H

) normally used.

The capacity of the suppressor units is consequently affected, which can

result in reduced phosphate sensitivity in less serious cases and a signifi-

cant rise in the baseline in more serious cases. If such capacity problems

occur at one or more positions, the suppressor units must be regenerated:

Regenerating the MSM

Regenerate the MSM as follows:

Disconnecting the MSM from the IC system

￭ Disconnect the MSM from the separation column and detector.

Regenerating the MSM

Caution

The pump tubing made of PVC must not be used for rinsing with

solutions containing organic solvents. In this case, other pump

tubing must be used for rinsing.

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Metrohm 850 Professional IC AnCat MCS User Manual Page 98