beautypg.com

6 liquids with specific properties, 1 adjusting the volume selection dial, 5 gravimetric check – Eppendorf Maxipettor 4720 User Manual

Page 13: Gravimetric check

background image

Gravimetric check

Varipette

®

4720

English (EN)

13

4.6

Liquids with specific properties

You can use the Varitip S to dispense liquids that differ substantially from water with
regard to their densities or vapor pressures.

Use the Maxitip to determine the required settings.

4.6.1

Adjusting the volume selection dial

5

Gravimetric check

The liquid for pipetting, Aqua bidest, must have the same temperature as the ambient air
20 °C – 27 °C (= reference temperature). In order to calculate the volume from the weight

Abb. 8:Correcting the volume

Fig. 8:

Correcting the volume

1. Attach the Maxitip.
2. Set the required volume using the selection

dial.

3. Keep the pipetting lever pressed down while

aspirating the liquid.

4. Turn the selection dial until the meniscus of the

liquid has reached the corresponding scale
mark. Turn the dial clockwise to raise the liquid
level. Turn the dial counter-clockwise to lower
the liquid level.

5. Read the setting determined for the required

volume from the volume display.

6. Dispense the volume from the Maxitip.

• For liquids with high vapor pressure, repeat aspirating and dispensing the liquid

until you can see no more gas bubbles at the tip when dispensing the liquid.

• We recommend the Varitip P for viscose liquids.