Method of detecting the permeability of an object to oxygen

Details Method of detecting the permeability of an object to oxygen Method of detecting the permeability of an object to oxygen

1992-12-10

1994-05-31

Housel, James C.

Chemistry: analytical and immunological testing

Process or composition for determination of physical state...

Surface area, porosity, imperfection, or alteration

436 1, 436127, 436138, 436904, 422 56, 422 86, G01N 3100

Patent

active

053169492

ABSTRACT:
A method of detecting the permeability of an article to oxygen is disclosed. A fluorescent redox indicator, preferably riboflavin, is dispersed in a carrier and placed on an impermeable substrate. The article to be measured is placed adjacent to the carrier. Residual oxygen is removed, the redox indicator is photoreduced, the article and carrier are exposed to oxygen, and the indicator is exposed to UV light.

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Fisher Scientific Catalog, 1988 p. SDS 261C.
"Fluorometric Analyses of Riboflavin and Its Coenzymes"; Jacek Koziol; Methods in Enzymology, vol. XVIII, Vitamins and Coenzymes; 1971, pp. 253-285.
"Photochemistry of Flavins"; G. R. Penzer and G. K. Radda; Methods in Enzymology, vol. XVIII, Vitamins and Coenzymes; 1971; Part B, pp. 479-495.

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