Positive Oxidase Test

positive oxidase test

Touch the Gibson Oxidase Test swab to a colony. An oxidase-positive reactions will appear purple to black within 10 seconds as shown in the above image. Disregard any color development that appears after 60 seconds.

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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: September, 2017