VISUAL DETECTOR FOR VAPORIZED HYDROGEN PEROXIDE

摘要

A method and apparatus for sensing the concentration of a gaseous sterilant in a sealable enclosure (20). An indicator (50) is provided that has a chemistry such that the indicator (50) changes color when exposed to vaporized hydrogen peroxide (VHP). The chemistry is adapted to react when exposed to a specific minimum concentration of vaporized hydrogen peroxide for a specific minimum period of time. In this manner, it can be visually determined whether articles (5) (e.g., medical instruments and like devices) located within the sealable enclosure (20) have been exposed to a minimum threshold of vaporized hydrogen peroxide.