Question

1- Technicians are usually given their own set of digital pipettes: a 10 or 20 UL maximum volume pippetter, a 20-200 UL maximum volume pipetter and a 200-1000 UL maximum volume pippette.To ensure the accuracy and precision of these pippetters, technicians are required to monthly or in some cases daily, validate these pipetters. It is common for technicians to validate pipetters in the full range of pipetters, in this case from 200 UL to 1000 UL, to make sure that the pipette is both accurate and precise at the volume it is calibrated to measure.

Measurement	Set to 200 ul	set to 750 ul	set to 1000 ul
1	220 UL	749 UL	1011 UL
2	250 UL	751 UL	1002 UL
3	180 UL	749 UL	997 UL
Mean
Standard deviation
Coefficient of variation

Answer 1