Chemistry: analytical and immunological testing – Process or composition for sterility or package integrity test
Patent
1990-11-27
1991-10-15
Johnston, Jill
Chemistry: analytical and immunological testing
Process or composition for sterility or package integrity test
422 56, 422 57, 422 58, 422119, G01N 3122
Patent
active
050574337
ABSTRACT:
An indicator element which provides a visual indication when subjected to correct steam sterilization conditions in an autoclave, the element comprising a substrate having coated thereon an ink formulation comprising as the primary visual change component: (i) a sulfur-containing compound capable of decomposition to yield a metal sulfide under steam sterilization conditions, or (ii) the precursors of which a sulfur-containing compound which will yield said sulfur-containing compound under aqueous conditions.
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Chemical Abstracts, vol. 93, 1980, p. 97, No. 206328s, Columbus, Ohio, U.S. Lead Chemicals, p. 257, Lead Thiosulfate, International Lead Zinc Research Organization, Inc. New York N.Y.
Boeder Jennie G.
Johnston Jill
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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