Metrohm 881 Compact IC pro – Anion - Manual (Page 72)

5.2 Capillary connections
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881 Compact IC pro – Anion
5.1.3 Operation
Caution
In order to avoid disturbing temperature influences, the entire system
including the eluent bottle must be protected against direct sunlight.
5.1.4 Shutting down
If the instrument is not used for a longer period, the whole IC system
(except the columns) must be rinsed salt free with methanol/ultrapure
water (1:4), in order to prevent eluent salts from forming crystals which
may cause subsequent damage.
Rinsing salt free the IC system
To rinse the system, proceed as follows:
1 Remove the separation column from the eluent path. Connect the
connection capillaries directly with each other using a coupling
(6.2744.040).
2 Rinse the IC system with methanol/ultrapure water (1:4) for 15
minutes.
Rinse with eluent for at least 15 minutes at starting up again and before
connecting the guard column and separation column.
5.2 Capillary connections
5.2.1 Operation
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 after the detector must be free of blockages.
Only use PEEK capillaries with an internal diameter of 0.25 mm in the high
pressure range between the high pressure pump and the detector.