Functional Testing - Vitlab Micropipette Manual

4. Functional testing

Mount new pipette tip and
set the nominal volume
Take up the test liquid
Leak test: Hold the filled pipette
vertically for approx. 10 seconds and
observe if a drop forms at the tip
Release the test liquid. Hold pipette tip
against wall of the vessel and wipe off
against the wall
Eject the tip
Possible errors and the resulting measures
(For other measures and more troubleshooting advice, please check the operating manual)
Error
Aspiration not possible
or very slow
Drop forming at the
pipette tip
► Aspiration of the liquid not possible or very slow:
See notes in the table below
►
If a drop forms:
See notes in the table below
►
The pipetting button must move smoothly and
jerk-free
►
Enter results in the test record
Possible cause
Pipette shaft or pipette shaft
tip blocked
Pipette tip not properly attached
Seal or piston damaged
V- resp. O-ring damaged
Measures
► Clean the instrument
(see operating manual)
► Attach new pipette tip
► Clean or replace seal and / or
piston
(see operating manual)
► Replace V- resp. O-ring
(see operating manual)
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