A Class 1 process indicator tape, also known as autoclave tape, is a chemical indicator used on the exterior of medical device packaging to distinguish between processed and unprocessed units. It is not designed to prove sterilization but to confirm that a package has been exposed to a sterilization process. Our Class 1 process indicator tapes conform to the ISO 11140-1 standard, which outlines the general requirements for indicators that show exposure to a sterilization process.