Diasys Diagnostic Systems Gmbh

Guenther Gorka

A method of identifying a blockage at the receiving opening of a pipetting needle which at or in the proximity of the receiving opening has an electrode (E) or is itself in the form of an electrode (E), in an analysis apparatus when taking liquid from a liquid-containing vessel and/or when delivering liquid into a liquid-containing vessel, in which

Method of identifying a blockage at the receiving opening of a pipetting needle

The invention concerns a method of automatically metering and mixing liquids effectively as quickly as possible and in few steps. The following steps: a) dispensing the liquid from a needle into the vessel, wherein the operation begins when the needle is at starting position (S), the dispensing operation is continued while the needle is moved in a vertical direction down toward end position (E), wherein the starting position is at a spacing from the bottom of the vessel; b) sucking up a part of the liquid present in the vessel while the needle is in the end position (E); c) moving the needle in a vertical direction to the starting position (S); and d) dispensing the liquid from the needle, wherein the dispensing begins when the needle is at starting position (S), dispensing operation is continued while the needle is moved in a vertical direction downwardly in the direction of the end position (E), and dispensing operation ends when the needle is at end position (E).

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Bad Camberg, Germany

Guenther Gorka