Thin polymer films containing solvatochromic dyes used as sensing elements to detect substances dissolved in liquids and gases. Dyes do not react with liquids in which dissolved, but do respond to changes in chemical compositions by changing color. Concentration determined visually by comparison of color with predetermined standard chart, or spectrophotometrically.
Colorimetric Detection Of Substances In Liquids And Gases
NASA Tech Briefs ; 16 , 4
1992-04-01
Miscellaneous
No indication
English
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