Autoclave Tapes - Ideal for Autoclave validation: The process indicator stripes turn white to dark brown / black when exposed to either steam sterilization conditions in a 121 degC gravity sterilizer or a 132-134 degC pre-vacuum sterilizer. Also available masking tape (without indicator). Meets 510 K Notified compliance. ETO Tape: The process indicator stripes turn brown to green after exposure to an EO gas sterilization process operating at 600 mg/L EO gas, 50% ±10% relative humidity, 54.4degC for 45 minutes or longer.