Eppendorf-Netheler-Hinz Gmbh

Herwig Puchinger

Hero Gerken

Gunther Kuhn

A pipetting device comprises a retaining cone for holding a slip-on pipette tip and a piston chamber, which communicates with a passage of the retaining cone and contains a reciprocable piston, which acts on the pipette tip that has been fitted on the retaining cone. A filter is provided in the assembly and consists of an aerosol-retaining filter that is detachably mounted in a region which includes the lower end of the pipetting device (1), including the retaining cone (8), as well as the upper end portion of the pipette tip (10) below the retaining cone. The filter may be designed in various ways and may have a progressive filter action. The filter may be arranged in the lower end portion of the retaining cone (8) or in the pipette tip (10) or in an interposed member.

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Hamburg, Germany

Herwig Puchinger