A: Gilson Pipetman are unique in using a Dry-Seal system with precision
manufactured seal and ‘O’ ring. This avoids the use of grease to produce
an air-tight seal. Grease may contain contamination. Pipetman can be
cleaned and seals and o-rings replaced without altering the calibration.
However, if you grease a pipette and then remove the grease for cleaning,
the amount of grease re-applied may vary and could alter the calibration
of the pipette.
CPR always replaces seals and ‘O’
rings during servicing as
recommended by Gilson to maintain high levels of accuracy and precision.
Other service agencies may use grease to obtain an air-tight seal
than replacing parts. Pipetman is not designed as a greased system
and this quick fix will have a long term detrimental effect on pistons and
tip holders with a loss of calibration over time.
Don't let anyone grease your Pipetman!