Jusha InCator Steam Chemical Emulator Indicator Strips are suitable for 132-134 degree celcius pre-vacuum pressure steam steriliser. Place the indicator in the center of the package to be sterilised. After the sterilisation is completed, take out the indicator to observe the colour change, and compare it with the standard color strip to judge whether the color has completely changed. Note: This product should be stored at room temperature (15- 30) and a relative humidity not exceeding 60%; avoid sunlight, fluorescent lighting and UV disinfection lighting; it should not be mixed with contaminated or toxic chemicals. This indicator can only be used for chemical indication of pressure steam sterilisation and cannot be used for dry heat, chemical gas and other low temperature sterilisation monitoring.