ADACX multi-variable EO sterilization indicator card is designed to be used in sterilization packages and in some places of sterilize chamber, where sterilizer agent could not access easily. The sterilization indicator color changes from orange to green in the EO sterilization process in 600mg/l ethylene oxide, at 30℃, 60%RH and time of 30 minutes. The multi-variable indicator card is 18mm×80mm paper strip which react critical parameters(temperature, gas concentration, humidity and time) of EO sterilization process. The multi-variable EO sterilization indicator card belongs to ISO 11140-1 CLASS 4.