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Symptom Possible cause Solution
Droplets left inside the tip Unsuitable tip Use original Sartorius
tips
Leakage or pipetted
volume too small
Non uniform wetting
of the plastic
Attach new tip
Tip incorrectly attached Attach firmly
Unsuitable tip Use original Sartorius
tips
Foreign particles
between tip and cone
Clean the tip cone,
attach new tip
Instrument
contaminated
Clean and grease the
piston and the tip cone
Insufficient amount of grease
on a piston and o-ring
Grease accordingly
Pipette out of
established specifications
Instrument damaged Return to your Sartorius
service representative
for servicing
Pipette blocked, aspirated
volume too small
Liquid has penetrated tip cone
and dried
Clean and grease the
piston and the tip cone
Tip ejector jammed or
moves erratically
Tip ejector collar has
been contaminated
Remove and clean
ejector collar and tip
cone
Continuous error
messages
Instrument damaged Return to your Sartorius
service representative
for servicing