Sterilized Barnstead Biological Indicator Spore Strips - Pack of 5 for Autoclave Validation & Sterilization Monitoring | Lab Equipment, Medical, Dental, Pharmaceutical Use

Run indicator through standard sterilization cycle; compress plastic vial to break glass ampule inside and then incubate for a minimum of 48 hours. When complete, read color indicator: purple means effective sterilization; yellow and cloudy means ineffective sterilization. For a compatible Dri-Bath Block Heater, see 1230W98.