General Microbiology & Sterilisation · NEET PG Preparation Microbiology
Which of the following biological indicators is specifically used to monitor the efficacy of ethylene oxide (EtO) sterilization?
Practice question from General Microbiology & Sterilisation (NEET PG Preparation Microbiology), with the correct answer and a step-by-step solution.
medium · MCQ · Q-4A40EC
Which of the following biological indicators is specifically used to monitor the efficacy of ethylene oxide (EtO) sterilization?
- A.Geobacillus stearothermophilus
- B.Bacillus atrophaeusCorrect answer
- C.Bacillus pumilus
- D.Pseudomonas aeruginosa
Solution
Bacillus atrophaeus (formerly Bacillus subtilis var. niger) is the standard biological indicator used for ethylene oxide (EtO) sterilization and dry heat. Geobacillus stearothermophilus is used for steam autoclaving and hydrogen peroxide gas plasma.
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