Metrohm 930 Compact IC Flex SeS - Manual (Page 63)

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5 Operation and maintenance
930 Compact IC Flex SeS (2.930.1400)
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5.2 Capillary connections
All connections between injection valve, separation column and detector
must be as short as possible, have a low dead volume and be completely
leak-tight.
The PEEK capillary downstream of the detector must be free of blockages.
Only use PEEK capillaries with an inner diameter of 0.25 mm in the high-
pressure section between the high-pressure pump and the detector.
5.3 Servicing the door
CAUTION
The door is made of PMMA (poly(methyl methacrylate)). It must never
be cleaned with abrasive media or solvents.
CAUTION
Never hold the instrument by the door when lifting it. Only hold the
instrument by the housing.
5.4 Handling the eluent
Careful handling of the eluent ensures stable analysis results. Keep the fol-
lowing general measures in mind when handling the eluent:
￭ The supply bottle with the eluent must be connected as indicated in
chapter 3.5, page 19. This is particularly important for eluents with vol-
atile solvents (such as acetone).
￭ Avoid condensation in the eluent bottle. Drop formation can change
the concentration ratio in the eluent.
￭ In the case of very sensitive measurements, we recommend that the
eluent be stirred constantly with a magnetic stirrer (e. g. the
2.801.0010 with 6.2070.000).
￭ To protect the IC system from foreign particles, we recommend aspi-
rating the eluent via an aspiration filter (see Chapter 3.5, page 19)
(6.2821.090). This aspiration filter has to be replaced as soon as it
turns yellow but at least every 3 months.