Author Question: Commercial-grade hydrogen peroxide is an effective disinfectant at room temperature after how many ... (Read 52 times)

cnetterville · **on:** Jul 16, 2018

Commercial-grade hydrogen peroxide is an effective disinfectant at room temperature after how many minutes?

a. 5 c. 30
b. 10 d. 60

Question 2

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

mrphibs · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
Commercially available 3 solutions of hydrogen peroxide are effective disinfectants of bacteria (including Mycobacteria sp.), fungi, and viruses and are active within 10 minutes at room tem-perature.

Answer to Question 2

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.