Simply process vial in a normal sterilizer cycle, then activate vial, incubate and record results. If any spores survive the process, the vial medium will turn yellow. • Easy to use - Simply process the vial in a normal sterilizer cycle. Then activate the vial, place in an incubator, and read and record results. • One of the most cost-effective methods of biological monitoring. • Universal - ConFirm biological indicators can be processed in any appropriate 55-60 degree incubators, including the current 3M Attest Incubator.