Bacillus used to test efficacy of Sterilisation by Autoclave is?: (A) Bacillus subtilis., (B) Bacillus pumilis., (C) Bacillus stearothermophilus, (D) Coxiella burnetti.
Answer is C. ANSWER: (C) Bacillus stearothermophilusREF: Basic medical laboratory techniques 4th edition by Barbara H. Estridge, Anna P. Reynolds,Norma J. Walters Page 70Various bacilli are used to check efficacy of sterilisation methods are:Autoclave- Bacillus stearothermophilusHot air oven- Bacillus subtilis subspecies nigerIonising radiation- Bacillus pumilis