# Which of the following agents is approved as an immersion sterilant?
A. Ethyl alcohol
B. Glutaraldehyde
C. Iodophors
D. Sodium Hypochlorite
The correct answer is B. Glutaraldehyde.
Immersion sterilants are agents used to sterilize instruments by dipping them in their solution.
Glutaraldehydes are used as a disinfectant and in fixing biological tissues for light and electron microscopy. This is the most widely used immersion sterilant.
Glutaraldehyde, sold under the brandname Cidex and Glutaral among others, is a disinfectant, medication, preservative, and fixative. As a disinfectant, it is used to sterilize surgical instruments and other areas of hospitals. As a medication, it is used to treat warts on the bottom of the feet. Glutaraldehyde is applied as a liquid.
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