In-office system for monitoring steam sterilizers. Easy to use and interpret. Results in 24 hours. 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. The incubator is 24 volt and holds up to 14 indicators. Indicators are also compatible with the current 3M Attest incubator.- Steam Biological Indicators, 25/bx