Eppendorf epMotion 5070 - Manual (Page 29)

Dispensing liquids
epMotion ® 5070
English (EN)
29
6 Dispensing liquids
6.1 Basic procedure for dispensing
6.1.1 Operating principle of dispensing tools
Abb. 6-1: Piston-stroke pipette principle
Fig. 6-1: Piston-stroke pipette principle
The dispensing tools are piston-stroke pipettes that function according to the air cushion principle.
If the piston moves upward in the dispensing tool, liquid will be aspirated into the pipette tip. If the piston
moves downward in the dispensing tool, liquid will be dispensed from the pipette tip. The pistons will be
moved by a motor in the tool holder.
On eight-channel dispensing tools, all 8 channels move simultaneously.
A Aspirate
The piston moves upward from the home position and
aspirates liquid.
B Dispense
Liquid dispensing.
Multidispense : Piston travels to the home position in
separate steps.
Pipette : Piston travels to the home position in one
step.
C Blow-out
Dispenses the residual liquid
Blow-out in the
Pipette dispensing mode
Remaining stroke in the Multidispense
dispensing mode
upper end position
basic position
end of blow-out
A B C