Brand Gmbh + Co. Kg

Rainer Feldmann

Dieter Böhm

Jürgen Schraut

Renate Rempt

Wolfgang Ettig

Daniel Setzer

Michael Ertl

Peter Krank

Josef Pfohl

Udo Dorant

A method for detecting the type of an exchangeable piston-cylinder unit for a dispenser, to a piston-cylinder unit having at least one radially oriented information carrier section, and at least one axially oriented information carrier section, both of which at least partially specifies the type of piston-cylinder unit, and to a dispenser having an acquisition device for automatically identifying the type of piston-cylinder unit arranged on the dispenser. The method has at least the following steps: a) detachably mounting the piston-cylinder unit on the dispenser by at least an axial movement; b) detecting completion of a successful mounting of the piston-cylinder unit on the dispenser with a sensor device; c) detecting an information of the axially oriented information carrier section; d) detecting an information of the radially oriented information carrier section; and e) determining the type of the piston-cylinder unit mounted on the dispenser from the detected information.

Method for detecting the type of an exchangeable piston-cylinder unit for a dispenser

Dispenser tip

A method for leak testing of hand-held piston stroke pipettes and a corresponding leak testing apparatus () for performing the method. Essential to the system is a holder () for the sealed connection of a pipette tip () to the leak-testing apparatus. A line system () with connecting sections of the leak-testing apparatus forms a specific connection volume. The pipette tip () is evacuated to a measuring pressure below atmospheric pressure. With the vacuum pump () disconnected and the connection volume sealed off, the pressure is measured after a specific time interval, and any possible rise in pressure is determined. An indication of the serviceability of the pipette () is generated from the pressure rise determined.

Method for leak-testing hand-held piston stroke pipettes and associated leak-testing apparatus

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Rimpar, Germany

Rainer Feldmann