Carbon dioxide detector
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United States of America Patent
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Jan 2, 1996
Grant Date -
N/A
app pub date -
Sep 28, 1994
filing date -
Jan 9, 1992
priority date (Note) -
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Abstract
The detector which provides a detectable indication of the presence of an elevated proportion of carbon dioxide compared to that in normal ambient air, comprises a substrate coated by an intimate mixture of a transparent plasticised polymer vehicle, and an indicator material which undergoes a color change on exposure to carbon dioxide. The indicator material comprises an anionic fluorimetric dye and a lipophilic organic quaternary cation.
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