Chemistry: analytical and immunological testing – Process or composition for sterility or package integrity test
Patent
1997-11-07
1999-08-24
Alexander, Lyle A.
Chemistry: analytical and immunological testing
Process or composition for sterility or package integrity test
436166, 422 57, 422 61, G01N 3112
Patent
active
059424389
ABSTRACT:
A method and apparatus for detecting exposure to an oxidation-type sterilant using a chemical indicator comprising bleachable dye is disclosed. Using the method and apparatus disclosed, a bleachable azo dye is incorporated with an anodized aluminum or chromate conversion coated surface and exposed to an oxidation-type sterilant, such as hydrogen peroxide, and inspected upon completion of the sterilization process for color change. If exposed to sterilant for an appropriate amount of time the bleachable dye changes color thereby indicating adequate sterilization. The surface incorporating bleachable dye may be made to change color after a predetermined number of exposures to a oxidation-type sterilant.
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Antonoplos Patricia A.
Ebrahim Alireza
Feldman Leslie A.
Hui Henry K.
Kohli Nitu
Alexander Lyle A.
Johnson & Johnson Medical Inc.
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