Hamilton Bonaduz Ag

Jonas Hilti

Hanspeter Romer

Fridolin Gysel

Reto Ettinger

Jürg Rast

The present application relates to a pipetting device and a pipetting method for pipetting, therefore for aspirating and/or dispensing, a metered liquid using a working gas, independently of the flow- and/or wetting characteristics of the metered liquid, wherein a pipetting channel comprises a first working region, of which the known base temperature is in a lower base temperature range, and a second working region, of which the known working temperature is in a working temperature range that is increased with respect to the base temperature range.

Device and method for exact liquid-class-independent pipetting

A pipette device comprises a pipette channel filled with compressible working gas, a pipette piston movable along the pipette path, a piston drive, which drives the pipette piston, a control device, a data memory connected to the control device for signal transmission, a pressure sensor which detects the pressure of the working gas and which is connected to the control device, a position sensor which detects a position of the pipette piston and which is connected to the control device. The control device is designed to determine a quality of a dispensing sequence on the basis of a target residual quantity value, which represents the target residual quantity of dosing liquid remaining in the pipette channel, of a working gas pressure and of an end position of the pipette piston, in each case after the end of the dispensing sequence, and to output the determined quality.

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Balzers, Liechtenstein

Jonas Hilti