Metrohm 850 Professional IC Anion MCS Prep 2 - Manual (Page 100)

4.9 Sample degasser
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850 Professional IC – Anion – MCS – Prep 2
4.9 Sample degasser
4.9.1 Operation
If you are working with sample degassing, the longer "transfer time" (see
Ascertaining the transfer time, page 88) means that it is also necessary to
rinse for longer (with the subsequent sample). The rinsing time should be
at least 3 times the "transfer time" so as to minimize the carry-over
effects. The "transfer time" itself depends on the pump capacity, total
capillary volume and volume of gas removed (i.e. the amount of gas in the
sample).
Note
When using the sample degasser, the rinsing time extends by at least 2
minutes.
4.10 Injection valve
4.10.1 Protection
To prevent contamination of the injection valve, a 6.2821.120 inline filter
(see Chapter 2.11, page 40) should be mounted between the high pres-
sure pump and the pulsation damper.
4.11 Metrohm Suppressor Module (MSM)
4.11.1 Protection
To protect the MSM against foreign particles or bacterial growth, a pump
tubing connection with filter must be mounted between the peristaltic
pump (see Chapter 2.17, page 53) and the input capillaries of the MSM
(see Figure 30, page 55).
4.11.2 Operation
Note
The suppressor units must never be regenerated in the same flow direc-
tion in which the eluent is pumped. Therefore always mount the input
and output capillaries according to diagram outlined in Figure 27, Page
51.
The MSM consists of 3 suppressor units, which are used for suppression,
regenerated with sulfuric acid or rinsed with ultra pure water in rotation.