Patent ID: 7192554

Claim:
A hydrogen peroxide sterilization indicator comprising a substrate and an indicator composition disposed thereon, wherein the indicator composition comprises: at least one salt comprising cupric chloride; at least one colorant that changes color when exposed to hydrogen peroxide; and at least one binder resin; wherein the colorant is selected from the group consisting of Alphazurine A, Azocarmine G, Victoria green S extra, Methyl violet 2B, Ethyl violet, Basic blue 41, FD/C blue 1, Toluidine blue O, Nile blue A, Quinaldine red, Basic blue 3, Acid black 24, Acid red 97, Sulforhodamine B, Chromotrope 2B, Brilliant blue R, Rhodanine 6G, Brilliant cresyl blue BB, D&C red No. 33, Acid violet 5, Plasmocorinth B, Methylene green, Methylene violet 3RAX, Reactive black 5, Basic red 15, Acid green AX986, Lissamine green B, Erioglaucine, Arsenazo 111, Azocarmine G, Victoria pure blue BO, Acid fuchsin sodium salt, D & C green No. 5, Basic red 14, and combinations thereof.