The Kirby-Bauer test uses an agar surface, seeded with the test bacterium, to which small discs containing a specific concentration of several drugs are placed on the surface.

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The Kirby-Bauer test is a commonly used method for antibiotic susceptibility testing. It involves using an agar surface to test the effectiveness of different antibiotics against a particular bacterial strain. Small discs containing a specific amount of antibiotics are placed on the agar surface, and the resulting zones of inhibition (areas where bacterial growth is inhibited) are measured and used to determine the susceptibility of the bacteria to each drug.

The Kirby-Bauer Test Uses an Agar Surface, Seeded with the Test