Self-contained biological indicators (SCBIs) for monitoring steam sterilisation consist of a durable PC vial with cap, a crushable glass ampoule with Trypticase® soy broth (TSB) modified with pH indicator, and a disc inoculated with Geobacillus stearothermophilus spores.

• Reduced incubation time of 24 hours
• Visually distinct positive results indicated by the media transitioning from purple to yellow
• Chemical indicator on label provides instant indication of exposure

Storage condition: 15 to 30 °C

Relative humidity: 20 – 70%