Biological Indicator results in three hours (brown cap) or one hour (blue cap). Self-contained biological indicators significantly reduce possibility of contamination, minimizing false positives and assuring more accurate results. Faster result time, making it possible to quarantine every load and eliminate recalls. System can help reduce the costs associated with fighting infections - cost measured in both dollars and time spent. Color-coded for quick reference and easy use. 3 hour result (brown cap) and 1 hour result (blue cap) biological indicators and test packs for steam sterilization cycles .