Manual

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The serial number is on the setting ring on the control button.
5.1 Testing
Research, single-channel
Distilled water is dispensed from a pre-wetted tip into a tube and is then
weighed.
Volumes 0.1 – 10 µL:
The test is performed with a highly sensitive analytic balance (resolution balance:
0.001 mg) by releasing the volume.
The bidistilled water, weighing vessel, pipette and pipette tip must all
be the same temperature!
To calculate the volume, divide the weight by the density of the water
(at 20 °C: 0.9982 mg/µL; mg/µL = g/mL).
Volumes > 10 µL – 10 mL:
For a volume of more than 10 µL, a balance with a resolution of 0.01 mg is
sufficient.
Research, multi-channel
Multi-channel pipettes are usually tested by dispensing the volume from a pre-
wetted tip into a tube.
5.2 Alignment
5.2.1 When should alignment be carried out?
The pipettes belonging to the Research Family were tested with water during
production in accordance with ISO 8655 and provided with a calibration seal at
the factory.
In the case of doubts arising with regard to the accuracy of the pipetted volume,
the following points should be clarified:
– Is the pipette leaking? (This is one possible reason for dispensed volumes
being too low; troubleshooting and solutions are contained in Sec. 7.)
5 Testing / alignment
Research – Part A – Sections 5
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