Convertible Balance Creates Easier Pipette Accuracy Checks
Weighing, Balances, Laboratory Balances
METTLER TOLEDO’s NewClassic MS semi-micro balances can now easily be converted to conduct
quick pipette checks to ensure pipette accuracy without requiring another instrument, eliminating small
pipetting errors and costly rework.
This clever feature is part of all NewClassic MS semi-micro balances, which allows them to convert to
combine weighing and pipette accuracy checks in the same easy-to-use instrument for reliable,
With Global standards such as GLP and ISO 8655-6 requiring pipette testing at defined intervals, it is
even more important for lab workers to know their pipettes are functioning properly, and for them to be
able to conduct the necessary pipette checks quickly and easily.
As minute quantities cannot be measured directly, ISO 8655-6 recommends distilled water for gravimetric
capacity meter calibration. Distilled water is pipetted onto the balance and converted to a volumetric
value. An application built-in to the balance firmware guides users through the check process. Systematic
and random pipette errors are automatically calculated in absolute and relative values. Results are
displayed and can be printed for traceability or for easy and quick comparison with the manufacturer’s
Convertible balances such as the NewClassic MS are ideal for labs where more frequent accuracy
checks (in between periodic required ISO standard calibrations) will provide added certainty that pipettes
are still performing as expected.
As part of the NewClassic MS range, the MS105 semi-micro balance converts easily from a laboratory
balance, with 0.01 mg readability, to a stand-alone pipette check-station, with an evaporation trap the onlyexternal device needed if the pipetting volume is smaller than 50 μg. The trap keeps humidity levels
stable during the check thus minimising evaporation for accurate testing.
For more about how METTLER TOLEDO’s New Classic MS can help eliminate errors and save time with
easy pipette accuracy checks, visit www.mt.com.
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