Which of the following statements about evaluating the effectiveness of chemical agents is false
A)Phenol coefficient can be used to evaluate the efficacy of phenol derivatives.
B)Materials present can complex with or inactivate a chemical agent during the phenol coefficient test.
C)In the filter paper test,a clear area around the disk indicates a prevention of microorganism growth but not killing of microbes.
D)The use-dilution test is considered to be more meaningful than the phenol coefficient.

Question

Quizplus · Accepted Answer

The filter paper test (or disk diffusion test) measures the effectiveness of a chemical agent by observing the zone of inhibition around a disk soaked in the chemical. A clear area around the disk indicates both the prevention of microbial growth and the potential killing of microbes, not just the prevention of growth. This test is used to assess the efficacy of antibiotics and disinfectants.

Which of the Following Statements About Evaluating the Effectiveness of Chemical