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Hot Air Sterilization at 200°
Author(s) -
Quesnel L. B.,
Hayward Janet M.,
Babnett J. W.
Publication year - 1967
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1967.tb00331.x
Subject(s) - sterilization (economics) , dry heat , bacillus subtilis , spore , materials science , sputum , metallurgy , pulp and paper industry , composite material , medicine , microbiology and biotechnology , biology , bacteria , engineering , tuberculosis , pathology , monetary economics , economics , foreign exchange market , genetics , foreign exchange
SUMMARY The efficiency of an automatic dry heat instrument sterilizer was tested using as test inoculum a mixture of spores of Bacillus subtilis strain MD 2 and B. subtilis var. niger as air dried films on stainless steel and glass objects. The sterilizer was operated at 200° and was found to be capable of sterilizing 20 stainless steel strips weighing 4 g each in an overall cycle time of c. 20 min; 6 sputum cups of total weight c. 2 kg required c. 38 min. Glass jars of equivalent weight appeared to need a longer time than did steel mugs. The factors involved in dry heat sterilization are discussed.