29
U1000 to U10ml
- Fit a Gilson Diamond Tip,
- set the pipette to the nominal volume given in the
specifi cations,
- aspirate the set volume from a beaker of water,
- maintain the pipette in the vertical position and
wait for 20 seconds,
- if a water droplet appears at the end of the tip
there is a leak (see Troubleshooting).
15 USER ADJUSTMENT
The following procedure is primarily used to check the
accuracy of a pipette following servicing (for example,
after replacing the piston assembly). Recalibration
must be carried out by trained people, under the cor-
rect conditions and using the equipment described
in “Procedure for Evaluating Accuracy and Precision
of Gilson Pipettes”. For more details contact your
Gilson distributor, who can help you to implement
these pipette checking procedures or to build up
your own procedures.
Users should establish a routine for testing their
pipettes at regular intervals, taking into account the
following factors: frequency of use (see cycle coun-
ters), the nature and accuracy requirements of the
liquids being pipetted, the number of operators using
the pipette, and the number of cycles performed
each time the pipette is used. Because Pipetman
Ultra Multichannel is designed with GLP in mind,
you may read the cycle counters after switching on
the pipette.
Procedure (Gravimetric Test)
Use a balance to measure the mass of the specifi ed
volume of water. The balance (which must be more
accurate than the pipette) must be at the sensitivity
specifi ed in the following table:
Summary of Contents for Pipetman Ultra 12x20
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Page 42: ...42 PIPETMAN ultra NOTES...
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