Which of the following is used to test the efficiency of sterilization in an autoclave?: (A) Clostridium tetani, (B) Bacillus stearothermophilus, (C) Bacillus pumilus, (D) Bacillus cereus
Answer is B. Autoclave: B. stearothermophillus
Hot air oven: Clostridium tetani nontoxigenic strain