Biological Indicator results in four hours. Self-contained biological indicators and test packs monitor EO sterilization cycles. Every load monitoring and quarantining can eliminate recalls. Malfunctioning sterilizers can be repaired and put back into service quickly. Each test pack contains a 3M Attest Rapid Readout Biological Indicator. The 3M Attest Rapid Readout Biological Monitoring System can help reduce the costs associated with fighting infections--a cost measured in both dollars and time spent. 4 hour result (green cap) biological indicators and test packs for ethylene oxide sterilization cycles.