As an internal pack monitor, the 3M Comply Steam Chemical Indicator offers a distinct off-white to dark brown/black color change when exposed to steam sterilization. It can be used in all steam sterilizers. The strip is perforated, allowing full or half-length use for different pack sizes. Distinct white to dark brown/black color change when exposed to steam sterilization. Strip is perforated so it can be used at full or half length depending on pack size. An ANSI/AAMI/ISO 11140-1:2005 Class 4 Chemical Indicator used to determine whether the sterilization process conditions were met inside each pack. Can be used in all 250-273?F steam sterilization cycles.