Other

Peter Koltay

Roland Zengerle

Wolfgang Streule

Gerhard Birkle

A changeable pipette tip includes a first end having a fluid opening and a second end having a pipe elastic in the radial direction having an orifice. The orifice and the fluid opening are in fluid connection. The first end is designed to be coupled to a matching coupling unit of a pipetting unit such that liquid may be sucked into the fluid area through the orifice by an actuating unit in the pipetting unit. In order to eject liquid as free-flying droplets or as a jet from the orifice of the pipe elastic in the radial direction, a volume change of a portion of the pipe elastic in the radial direction is effected.

Pipette tip, pipetting device, pipette tip actuating device and method for pipetting in the NL range

A microdosing apparatus and method include a fluid conduit having a flexible tube with a first end for connecting to a fluid reservoir and a second end where an outlet opening is located. An actuating device with a displacer with an adjustable stroke is provided, by which the volume of a portion of the flexible tube can be changed to thereby dispense liquid as free flying droplets or as a free flying jet at the outlet opening by moving the displacer between a first end position and a second end position, whereby the tube is partly compressed in the first or the second end position.

Microdosing apparatus and method for dosed dispensing of liquids

A microdosage device comprises a media reservoir used for accommodating a liquid to be dosed, a nozzle connected via a connecting channel to the media reservoir and adapted to be filled via said connecting channel with the liquid to be dosed, and a drive unit for applying, when actuated, to a liquid contained in the media reservoir and in the nozzle a force of such a nature that a substantially identical pressure will be exerted on said liquid contained in the media reservoir and in the nozzle. Flow resistances of the connecting channel and of the nozzle are dimensioned such that, in response to an actuation of the drive unit, a volumetric flow in the connecting channel will be small in comparison with a volumetric flow in the nozzle, said volumetric flow in the nozzle causing an ejection of the liquid to be dosed from an ejection opening of the nozzle.

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March, Germany

Peter Koltay