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Bowie & Dick Test Chemical Indicator Green Cards are for testing the air removal efficiency of vacuum-assisted (Class B) steam sterilizers.
Bowie & Dick Test Card should be used daily, after a sterilizer is installed or relocated, after a malfunction, sterilization process failures and any major repairs of the sterilizer.
Chemical indicator changes from purple to green when processed. A heterogeneous colour change, i.e the presence of purple colour, indicates the presence of an air pocket during the sterilization cycle, thus indicating sterilizer malfunction.
