Metrohm 850 Professional IC Anion MSM-HC - LP-Gradient - Manual (Page 95)

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5 Operation and maintenance
850 Professional IC Anion MSM-HC LP Gradient
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5.9 Sample degasser
5.9.1 Operation
If you are working with sample degassing, the longer "transfer time" (see
Ascertaining the transfer time, page 83) 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.
5.10 Injection valve
5.10.1 Protection
To prevent contamination of the injection valve, a 6.2821.120 inline filter
(see Chapter 3.13, page 43) should be mounted between the high pres-
sure pump and the pulsation damper.
5.11 High Capacity Metrohm Suppressor Module
(MSM-HC)
5.11.1 Protection
To protect the MSM-HC against foreign particles or bacterial growth, a
6.2744.180 pump tubing connection with filter (see Figure 32, page 57)
must be mounted between the peristaltic pump and the inlet capillaries of
the MSM-HC .
5.11.2 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 inlet
and outlet capillaries according to diagram outlined in figure 29.