Can be used in all 250-273°F sterilization cycles. Designed to monitor exposure to steam conditions in a pack. Provides a visual color change to validate that the sterilant has penetrated to the point of placement in the pack and confirm that sufficient exposure conditions have occurred. Steam chemical indicator changes color from white to dark brown/black or as dark or darker than the color standard when exposed to steam sterilization conditions. Strip is perforated so it can be used at full or half length depending on pack size.