VWR International VWR 10 Instruction Manual page 12

If you choose VOLUME1 = 0, step 2 won't occur, if you choose VOLUME 2 = 0 μL, step 4
won't occur, as well if you set
VOLUME 1 and 2 = 0 μL, step 1-4 will disappear. If you set VOLUME 3 = 0 μL step 7 will not
occur.
REVERSE Mode
The REVERSE Mode is reverse pipetting with a manual pipette. During aspiration,
additional liquid is added. After delivery, the excess volume remains in the tip and is discarded.
• Press the Mode-button to access system menu, where you can choose between different pipette
modes.
Select REVERSE Mode by turning the Push-button, to confirm your selection click the Push-button.
• Set the volume: click the Push-button, set the volume by turning the Push-button and click again
to confirm your settings.
You are ready to do reverse pipetting!
1/ Fit a suitable tip
2/ Click the Push-button to aspirate the selected volume. An amount of liquid equal to the amount of
purged air is added, the volume aspirated will be a little bit more than the set volume.
3/ Click the Push-button to dispense the volume, the additional amount of liquid remains in the tip.
4/ To purge: press the Push-button, "PURGE" appears on the screen, click again to purge and
reset the piston. Keep your thumb pressing the push-button until the end of the purge: the piston
reset takes place after you release the Push-button again. This feature enables you to remove the
tip from the liquid, without aspirating anything.
5/ Eject tip by pressing the ejection button.
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