There are two acceptable methods for calibrating and testing multichannel pipettes: Each channel can be measured individually, one after another, with a
single-channel pipette calibration balance. For this purpose, test liquid is aspirated by all channels together and collected from one channel at a time. A
multichannel pipette calibration balance can be used to measure the test volume delivered from all channels in parallel by aspirating and emptying each channel simultaneously and analyzing each channel’s results individually.