Rodwell offers three different types of Time, Steam & Temperature (TST) strips. Class 4 indicators, Class 5 integrators and Class 6 emulators for various levels of autoclave process control. The strip indicator colour demonstrates at a glance whether or not the product has gone through the sterilisation process, making it easy for sterilisation facilities to ensure that products have been exposed correctly to the sterilisation process. Strips transition an initial colour to a different signal colour depending on the strip type.