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Chemical indicator sheets and packaging bags for sterilization made with the use of the same

  • US 6,267,242 B1
  • Filed: 10/18/1999
  • Issued: 07/31/2001
  • Est. Priority Date: 04/17/1997
  • Status: Expired due to Term
First Claim
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1. A sheet used for monitoring the efficacy of a hydrogen peroxide plasma sterilization treatment, said sheet comprising an indicator-function layer, said indicator-function layer comprising:

  • a dye which can change color when contacted with at least one substance selected from the group consisting of hydrogen peroxide and plasma derived from hydrogen peroxide, an organic amine compound which does not evaporate under ambient conditions, at least one aliphatic alcohol, and a synthetic resin which is soluble in said alcohol.

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