Powdertech Co., Ltd.

Ryuichi Kodama

Hiroshi Endo

Shigeru Tanaka

Mitsuyuki Sato

Toshitaka Wada

It is an object of the present invention to provide: an oxygen indicator aqueous solution for an oxygen detector that has high heat resistance, can be stored at room temperature, and can maintain an excellent ability to detect oxygen, regardless of the atmospheric temperature; an oxygen detector; and a method for manufacturing an oxygen detector. In order to achieve this object, there is provided an oxygen indicator aqueous solution for an oxygen detector that is an aqueous solution comprising reducing saccharides, a basic substance, and a redox dye reduced by the reducing saccharides, the aqueous solution comprising, as the reducing saccharides, a monosaccharide as a first component and a reducing trisaccharide as a second component. In addition, there is provided a manufacturing method preferred for the manufacturing of the oxygen detector.

Oxygen detector and method for manufacturing oxygen detector

The oxygen detecting device () of the present invention includes an oxygen detector sheet having a sheet carrier () having a porous inorganic material filled therein which has been impregnated with an oxygen detecting fluid, and a film () having a predetermined oxygen transmittance for covering and sealing the sheet carrier (). Since the sheet having the porous inorganic material filled therein is adopted, the oxygen detecting device has an excellent light resistance, leading to clear recognition of coloration for a long period of time. Because of excellent light resistance, the device keeps excellent property even after long exposure to a fluorescent lamp in a display case for displaying foods. Thus the device is suitable for checking quality of commercial products.

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Kashiwa, Japan

Ryuichi Kodama