6- Pipetting - VWR HIGH PERFORMANCE PIPETTOR User Manual

VWR HIGH PERFORMANCE PIPETTOR
®
6 - PIPETTING
Fitting the tips
VWR High Performance Pipettor have been designed to fit VWR tips.
Pre-rinse the tips
Some liquids (e.g.protein-containing solutions and organic solvents) can leave a film
of liquid on the inside wall of the tip; pre-rinse the tip to minimize any errors that
may be related to this phenomenon.
Pre-rinsing consists of aspirating the first volume of liquid and then dispensing it to
waste. Tips will not fall off nor will they have to be manually positioned.
Make sure first that the pipettor is calibrated with the tips that you are using. Then,
subsequent volumes that you pipettor will have levels of accuracy and precision
within specifications. Using other tips may require a validation of the pipetting
system.
1
st
1 stop
st
2 stop
nd
FIGURE 10
10
stop