Microbiology General 4a44dab0 Steam Sterilisation cycle uses: A 121 degrees Celsius, 15 psi, 15 min B 160 degrees Celsius, 20 psi, 15 min C 170 degrees Celsius, 25 psi, 10 min D 180 degrees Celsius, 15 psi, 15 min High-Yield Explanation No explanation provided.