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.
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