Indicator device

Details Indicator device Indicator device

G - Physics

01

N

150/21

G01N 31/22 (2006.01) A61M 16/04 (2006.01)

Patent

CA 1322945

A B S T R A C T A rapid response device for the detection of carbon dioxide in a concentration of more than 2% in a gas mixture comprising an indicator component 9 mounted within an enclosure 1 with a transparent window, said component comprising a carrier having fixedly attached thereto an indicating element formed from an aqueous solution of a colorless base, a hygroscopic, high boiling, transparent, colorless, water- miscible liquid and a pH-sensitive indicator, the enclosure being sealed for storage with sealing means 14.

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