Why Is Bacillus Stearothermophilus Used In Autoclaving?

Why Is Bacillus Stearothermophilus Used In Autoclaving? Bacillus stearothermophilus was, until the discovery of archaebacteria in hot springs, the most heat-resistant organism known. Spores withstand 121°C for up to 12 min, and this has made the organism ideal for testing autoclaves that run on a time–temperature cycle designed to ensure the destruction of spores. What