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Sterilization by dry heat
  1. E. M. Darmady,
  2. K. E. A. Hughes,
  3. J. D. Jones,
  4. D. Prince,
  5. Winifred Tuke
  1. Portsmouth and Isle of Wight Area Pathological Service


    The advantages and disadvantages of three forms of dry heat sterilization are discussed. In addition a fourth method, consisting of heating by infrared rays in vacuo, is described. This method is particularly suitable for instruments used in the operating theatre, since it can replace an autoclave where a supply of steam is not available. Recommended times and temperatures for dry heat sterilization are detailed, and are related to the thermal death point of Cl. tetani. The dangers of recontamination during the cooling process are discussed.

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    • 1 From a lecture given by one of us (E.M.D.) to the School of Pharmacy, Chelsea College of Science and Technology, London, on 2 February 1960.