Metrohm 833 IC Liquid Handling Unit - Manual (Page 42)

5 833 IC Liquid Handling Suppressor Unit
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
34
• Immerse the other end of the aspiration tubing in a container
with regeneration solution (normally 50 mmol/L H
2
SO
4
) and fix
it in position.
• Pull outlet capillary 29 (marked with “Waste”) through one of
the openings 41 or 43 in the rear panel of the 820 IC
Separation Center.
• Lead outlet capillary 29 into a sufficiently large waste bottle
and fix it in position.
10 Suppressor connection 3: H2O
• Pull inlet capillary 31 (marked with “H
2
O”) at suppressor
connection 25 (see Fig. 9) through one of the openings 18 in
the rear panel of the 820 IC Separation Center.
• Fasten inlet capillary 31 (23 in Fig. 7) to filter unit PEEK 22
(6.2821.120) of the second pump tubing using a
compression fitting 17 (6.2744.010), see Fig. 7.
• Mount aspiration tubing: cut a piece of PTFE tubing 16
(6.1803.020) to the required length.
• Attach a PEEK compression fitting 17 (6.2744.010) to one
end of the PTFE tubing 16 and screw this on to coupling 18.
• Immerse the other end of the aspiration tubing in a container
with rinsing solution (normally dist. H
2
O) and fix it in position.
• Pull outlet capillary 30 (marked with “Waste”) through one of
the openings 41 or 43 in the rear panel of the 820 IC
Separation Center.
• Lead outlet capillary 30 into a sufficiently large waste bottle
and fix it in position.
11 Start up 833 IC Liquid Handling Suppressor Unit
• Switch on 833 Pump Unit with mains switch 8.
• Set the contact pressure for both cassettes: press contact
lever 5 until the solutions are just aspirated. Then press the
contact lever up by 1 further click to achieve the optimum
contact pressure.
• Before switching the suppressor to the next position for the
first time (see Section 5.2) rinse the three suppressor units
with solution for 5 minutes.
• Check all the tubing from the storage containers to the 833 IC
Liquid Handling Unit and the suppressor module through to
the waste bottles for leaks. If any liquid should be leaking
then the corresponding connection must be tightened up or
replaced.