The industry standard multichannel pipette calibration is based on measuring the average weight of all the channels. When this is performed, the technician aspirates water and visually checks that the channels/volumes aspirate at the same rate, fill the same space in the pipette tips, and dispense at the same rate. If the average of all the channels is within manufacturer specifications, the pipette is considered calibrated.
Individual Channel Calibration
If you are performing precise, quantitative work like Real-Time PCR or patient sample testing, I recommend choosing Individual Channel Calibration. This means each channel is individually adjusted, weighed, and calibrated.
If accuracy & precision is important when using your multichannel pipettes, we would suggest the per channel service. It’s a small price to pay to assure your multichannel pipettes are perfectly within calibration on each channel.