This medium is designed to be utilized in conjunction with BIS containing Bacillus atrophaeus to monitor Ethylene Oxide(EWO), Dry heat, Vaporized Hydrogen Peroxide(VH202), Chlorine Dioxide (CIO2) processes. . It contains Soyabean Casein Digest Medium with Bromothymol blue, BTB (BTB) as an indicator. It is available in 4 ml packing.