Problem
Cause
The liquid is
dispensed too fast
Droplets of liquid
remain
The tips wettability
in the pipette tips
has increased due
to extensive use
The pipette tips
immersion
is too shallow
Air bubbles appear in
The pipette tips
the liquid
are incorrectly
aspirated into
pressed onto
the tips
the pipette shafts
The tip is damaged
or worn out due to
extensive use
The pipette tips
are incorrectly
pressed onto
the pipette shafts
The shafts surface
are damaged
or contaminated
at the sealing site
The pipette
incorrectly
The plungers or the
aspirates the liquid or
seals are damaged
the liquid drops out
due to prolonged
from the tips
aspiration of aggres-
sive liquids
The inside
of the pipette
is contaminated
No lubrication
on the sealing
elements
13
Instructions
Decrease the
dispensing speed
Replace the tips with
new ones
Immerse the tips
deeper according
to the instruction
Press the tips firmly
Replace the tips
with new ones
Press the tips firmly
Clean the shafts
or send the pipette
for service in order
to replace the shafts
Send the pipette
for service
Problem
Cause
The inside of the
pipette is contaminat-
ed due to aspiration
of aggressive sub-
stances
Uneven work
The inside
of the pipetting set,
of the pipette
the pipetting
is contaminated
pushbutton
due to the liquid
gets blocked
entering the pipette
No lubrication
on the sealing
elements, e.g. after
repeated autoclaving
procedures
Liquid with proper-
ties other than water
(density, viscosity)
Incorrect aspiration
The volume adjust-
ment knob used
in the "CAL" mode
If the problem continues after carrying out the above
steps, contact your pipette supplier to conduct repairs.
CAUTION: Before returning the pipette, please ensure
that the pipette is completely free of any aggressive
chemical, radioactive, microbiological contamination
which could pose a threat during transport and repair.
Clean the pipette as far as it is possible.
8. PIPETTE KIT
The pipettes are delivered in the kits including:
• Pipette
• Short instruction manual
• CD
• Calibration key
• Pipette stand
All rights reserved. Product described in this manual is subject to availability
and technical modification. Errors excepted.
PZ HTL S.A. reserves the right to improve, enhance or otherwise modify
its products without prior notification.
© 2015 PZ HTL S.A.
ENGLISH
Instructions
Send the pipette
for service
Calibrate the pipette
using the liquid
which is to be
pipetted
Calibrate the pipette
according
to section 5
14