The biological indicator used in various autoclave machines for quality check is-
METHOD Sterlization control Hot air oven Autoclave Filtration Ionizing radiation (cold sterilization) Ethylene oxide Plasma sterilization Clostridium tetani non toxigenic strain, B.subtilis sub sp. niger B.Stearothermophillus Brivundimonas dimunata B. Pumilus B.Globigi B.Stearothermophillus
Clostridium tetani
Bacillus stereothermophilus
Bacillus pumilus
Bacillus subtilis
General Microbiology Pa-2 and Pa-3 (Sterilization and Bacterial Genetics)