Which of the following is an intermediate level disinfectant?
A. Glutaraldehyde
B. Quaternary ammonium compound
C. Hydrogen peroxide
D. Iodophors
Correct answer : D. Iodophors
Intermediate level disinfectants are chemicals which can kill microbial pathogens including mycobacteria and non enveloped virus, but not the spores.
Examples include alcohol, phenolic compounds and iodophors.
Glutaraldehyde and hydrogen peroxide are high level disinfectants.
Quaternary ammonium compounds are low level disinfectants.
Ref: Ananthanarayan and Paniker’s Textbook of Microbiology, 9th edition, p37.