Description [Plastic core] : It prevents the generation of debris from paper core and ensure the clean of sterilized items. [Strong adhesion] : Trusted, high quality adhesion. Stretchable backing that minimizes tape pop-off during sterilization. Easily removed without any traces of residue. [Steam sterilization] : Pressure steam sterilization indicator tape, specially used to stick to the package of items, indicating whether the package of items has passed the pressure steam sterilization. It is ideal tape for sealing autoclave bags, pouches, CSR wraps and tubing. [Color change] : From beige to black Instruction Paste the indicator tapes on the packages and put it in steam autoclave. Run the sterilization program 249.8°F / 121℃ for 20 minutes or 273.2/134°C for 4~6 minutes. Observe whether the indicator tape changes from yellow to black after the sterilization. Note It is used for steam autoclave and sterilization only. Not for dry heat or EO sterilizers.