Type 4 Chemical Indicator OK® Steam Sterilization Strips monitor steam sterilization cycles at 250°F (121°C) and 272°F (134°C). OK Strips are internal pack monitors available in short (4?) and long (8?) sizes.

OK Multivariable Chemical Indicator Strips confirm that all critical parameters of steam sterilization have been met: time, temperature, and saturation (ANSI/AAMI/ISO 11140-1:2014 ).

OK Strips feature an instantly recognizable “OK” symbol after exposure to an effective steam sterilization cycle. “K” will turn from off-white/white to dark brown/black color. Also available in an 8? Type 4 Chemical Indicator OK Steam Sterilization Strips. The 8? indicator strip features an indicator dot at the opposing end to extend its reach in a tray or other sterilization packaging.

• For steam sterilization cycles of 250°F(121°C)and 272°F (134°C)
• Pre-printed standard reference color permits rapid and certain visualization of results
• Distinct white-to-black color change
• Easy to read “OK” indicator output
• Save for record-keeping purposes, easily write on indicator after processing