Which of the following should routinely be used to ensure proper function and quality control of an autoclave?
1. Pressure-sensitive tape
2. Biologic indicators
3. Chemical indicators
4. Heat-sensitive tape
a. 2 c. 1, 2, and 3
b. 2 and 4 d. 1, 2, and 4
ANS: B
Because the process of autoclaving depends on several factors, heat-sensitive tape and biologic indicators are routinely used to ensure quality control during the process. Heat-sensitive tape that is used for packaging materials for autoclaving changes color when it is exposed to a given tem-perature for a prescribed amount of time. The most common biologic indicators for autoclaving are strips of paper that are impregnated with Bacillus stearothermophilus spores. These strips should be used weekly (at a minimum) to ensure that the autoclave is working properly. Biologic indicators are also used for ethylene oxide sterilization.
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