Ringsdorff-werke Gmbh

Bruno Hutsch

Bernd Schmidt

Wolfgang Vesper

A graphite tube furnace and a specimen support are provided for atomic absorption spectroscopy. The graphite tube furnace has end surfaces with slots. The specimen support has an intermediate or middle section with a recess for receiving a specimen and end sections which are wider than the middle section. Upon insertion in the graphite tube furnace, the specimen support is fixed with the wider end sections in the slots in the end faces and the intermediate section is held at a constant distance from the wall of the tube furnace. As a result, current conduction and heat flow between tube furnace and the specimen support are very small.

Graphite tube furnace with specimen support for atomic absorption

A graphite tube furnace with a specimen support for use in atomic absorption spectroscopy has preferably knife-edged shaped flanges on the inner wall surface of the tube furnace. The specimen support is held on the flanges at a distance from the inner wall surface. This avoids the production of heat in the specimen support and heat flow from the tube furnace to the specimen support.

An electrode for use in an electrochemical process which is particularly suitable for use as an anode for an electrophoretic process includes a phenolformaldehyde resin matrix and a filler dispersed therein which is produced by graphitization of carbon black coke. Such electrodes are more stable, particularly in contact with oxidizing media, than carbon and graphite containing electrodes having a filler of different origin.

Electrode for electrochemical processes

Unitary receptacle and contact pieces for vaporization and spectroscopic analysis of an analysis sample. Receptacle means are incorporated in the receptacle reception of the sample. The contact pieces are formed integrally with the receptacle for connection of the reception means to an electrical supply unit to enable the sample to be heated. The reception means may constitute a bore in the receptacle, a cup for containing an analysis sample engageable in the bore and additional contact pieces formed integrally with the cup for connection of the cup with a current supply unit therefor.

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Bonn, Germany

Bruno Hutsch