Instruction Manual – 19
Precision and accuracy should not alter if the pipetting
processes including autoclaving are carried out as
described in this manual. If a change in accuracy occurs,
it is recommended to:
• Check the calibration of the pipettor after the first,
third, and fifth autoclaving cycles and then after every
10 autoclaving cycles.
Ultra Violet (UV) Sterilization
The pipettors are UV resistant. The distance from the
radiation source to the exposed element of the pipettor
should be at least 50 cm. Prolonged or intense UV
exposure can cause discoloration of pipettor parts but
does not affect its performance.
11. Troubleshooting
If a problem is encountered during pipettor operation,
use the following table to identify and eliminate the fault
following the instructions provided. Replacement of parts
should be required only occasionally and should not be
required with normal pipettor use.
Problem
Cause
Solution
Droplets of
liquid remain
in the pipet
tip.
The pipet tip is emptied
too fast.
Decrease the speed
of pressing the
pipettor pushbutton.
The pipet tip wettability
has increased due to
extensive use.
Replace the tip with
a new one.
Droplets
of air appear
in the liquid
aspirated
into the pipet
tip.
The pipet tip immersion
depth is too shallow.
Immerse the tip
to the recommended
depth according to the
instructions.
The pipet tip is incorrectly
pressed onto the pipettor
shaft.
Press the pipettor
tip firmly onto the
pipettor.
The tip is damaged or
worn out due to extensive
use.
Replace the tip with
a new one.
The pipettor
incorrectly
aspirates
the liquid
or the liquid
drops out
from the tip.
The pipettor tip is
incorrectly pressed onto
the pipettor shaft.
Press the pipet tip
firmly onto the
pipettor.