Axagarius Gmbh & Co. Kg

Dominik Lange

Jürgen Hoffmann

Ralph Husmann

Christian Prokisch

Tobias Schillberg

Test device and method for the semi-quantitative determination of chlorine dioxide in a liquid sample has at least two carrier matrices. The first carrier matrix comprises at least one amino acid, sodium thiosulphate, at least one redox indicator, buffer substances and at least one surfactant. The second carrier matrix comprises at least one inorganic iodide salt, starch and/or at least one starch derivative, sodium thiosulfate, buffer substances and at least one surfactant.

Test device and method for the semi-quantitative determination of chlorine dioxide in a liquid sample containing free chlorine

A method for treating a plurality of indicator fields for determining the pH-value of an aqueous solution is provided. Each of the indicator fields contains at least one indicator dye, which is fixed in a non-bleeding manner, in particular on a layer including cellulose or regenerated cellulose, and changes its color within a pH-turning-range. The indicator fields having buffer capacities which differ from one another. All the indicator fields are impregnated from the outside with an impregnation which influences the buffer capacities of the indicator fields in such a way that the deviations are levelled.

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Cologne, Germany

Dominik Lange