Metrohm 889 IC Sample Center - Manual (Page 40)

5.3 Maintenance and service
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889 IC Sample Center
￭ Sample rack. If sample has been spilled on the sample rack, clean this
with a soft cloth and a mild cleaning fluid.
￭ Drainage lines. Rinse the drainage tubing regularly in order to pre-
vent blockage and to ensure the drainage of liquids and condensation
water.
5.3 Maintenance and service
5.3.1 Sample loop
The 889 IC Sample Center is equipped as standard with a 100 µL sample
loop. Other sample loops can be mounted. Please note however that the
correct combination of syringe and buffer loop is required in order to ach-
ieve good results.
Observe the following when mounting a sample loop:
￭ Mount the sample loop at Port 2 and Port 5 of the injection valve.
￭ Adjust the configuration settings in the control software for the
changed sample loop volume.
Note
The maximum injection volume is calculated in accordance with the fol-
lowing formulas:
Full loop: Injection volume = Loop volume
Partial loopfill: max. injection volume = 0.5 × loop volume
µL Pickup: max. injection volume = (loop volume – 3 × needle volume)
/ 2