Eppendorf Maxipettor 4720 - Manual (Page 12)

Operation
Varipette
® 4720
English (EN)
12
4.5 Pipetting with the Varitip S
You can pipette in the same way with the Varitip S as with the Varitip P.
Please also observe the following:
 Always hold the pipette vertically when aspirating liquids.
 Hold the tip of the Maxitip against the inner wall of the vessel when dispensing liquids.
 Hold the long tip of the Varitip S against the inner wall of the vessel when dispensing
liquids.
Apply an extra stroke to remove any residual liquid from the tip when working with highly
wetting liquids:
1. Let the pipetting lever slide upward.
2. Press the pipetting lever to slightly raise the piston.
3. Press the pipetting lever again to dispense the liquid.
4.5.1 Pipetting with the Maxitip and valve
The tip of the Maxitip is closed by the weight of the valve (density = 1.78 g/L).
 Hold the tip of the Maxitip against the inner wall of the vessel and push back the valve
one time before aspirating liquids.
The aspirated liquid will raise the valve during the aspiration process.
 Hold the pipette with filled Maxitip and valve vertically during transport.
 Hold the tip of the Maxitip at an angle against the inner wall of the vessel and push up
the valve when dispensing liquids.
 Hold the aspiration and dispensing vessels steady with the other hand.
Abb. 6:Aspirating liquids
Fig. 6: Aspirating liquids
Abb. 7:Dispensing liquids
Fig. 7: Dispensing liquids