Which is NOT Used to Measure the Effectiveness of an Antimicrobial

Question

Which is NOT used to measure the effectiveness of an antimicrobial agent
A)Filter paper method
B)Phenol coefficient method
C)Use-dilution method
D)Plate count method

Accepted Answer

The plate count method is not used to measure the effectiveness of an antimicrobial agent. This method is used to determine the number of viable microorganisms present in a sample, not the efficacy of an antimicrobial agent. The other three methods listed (filter paper method, phenol coefficient method, and use-dilution method) are commonly used to measure the effectiveness of antimicrobial agents.