Battelle-institut E.v.

Aquis Wasser-luft-systeme Gmbh, Lindau Zweigniederlassung Rebstein

Klaus Zucholl

Andreas Wawrla

Heinz-Werner Etzkorn

Hartmut Erdmann

Harald Schrott

Sonya Ammende

Sonja Ammende

A water tank is proposed with a filter cartridge especially for use in automatic vending machines in which the risk of contamination and bed compaction of the filter bed are reduced or avoided. This is accomplished according to the invention by the water inlet opening of filter cartridge being located at the bottom, with a passageway provided for the water to pass through filter cartridge upward and a descending drop line to guide the water to drain of water tank, located at the bottom.

Water container with filter cartridge

A solid state electrode for the determination of sodium ion concentrations in solutions, with a solid state electrolyte having a high conductivity for sodium ions being provided as the sodium sensitive membrane. The solid state electrode and a reference electrode forms a sensor. The advantages of the sensor of invention are, in particular, high selectivity combined with economical production in thick-film technology. The sensor may be constructed in cylindridcal form.

Solid state electrode for the determination of sodium ion concentrations

A sensor for monitoring hydrogen concentrations in gases, containing a solid electrolyte body, a detector electrode having a surface which is exposable to a gas to be monitored, and a reference electrode, in which the reference and detector electrodes make contact with the solid electrolyte, and the detector electrode contains a platinum metal or a platinum metal oxide. A method of making the sensor is also disclosed.

Method for making a sensor for monitoring hydrogen concentrations in

A sensor for monitoring hydrogen concentrations in gases, containing a solid electrolyte body, a detector electrode having a surface which is exposable to a gas to be monitored, and a reference electrode, in which the reference and detector electrodes make contact with the solid electrolyte, and the detector electrode contains a platinum metal or a platinum metal oxide.

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Mannheim, Germany

Klaus Zucholl