<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2014) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> The agar diffusion test (Kirby--Bauer antibiotic testing, KB testing, or disc diffusion antibiotic sensitivity testing) is a test of the antibiotic sensitivity of bacteria . It uses antibiotic discs to test the extent to which bacteria are affected by those antibiotics . In this test, wafers containing antibiotics are placed on an agar plate where bacteria have been placed, and the plate is left to incubate . If an antibiotic stops the bacteria from growing or kills the bacteria, there will be an area around the wafer where the bacteria have not grown enough to be visible . This is called a zone of inhibition . </P> <P> The size of this zone depends on how effective the antibiotic is at stopping the growth of the bacterium . A stronger antibiotic will create a larger zone, because a lower concentration of the antibiotic is enough to stop growth . </P>

What was the purpose of the kirby-bauer method