114k views
5 votes
Why would it be important for the Kirby-Bauer disc diffusion test to use a standard concentration (number of cells in the sample) of each of the bacterial strains being tested?

1 Answer

3 votes

Answer:

It is important to use a standard concentration of each of the bacterial strains in the Kirby-Bauer disc diffusion test because lower or higher concentrations can influence the size of the zone of inhibition. For example, in case if the concentration is high, then a visible amount of growth can take place prior to the antibiotic been able to diffuse very far from the disc.

User Ckozl
by
7.8k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.