Biochemical Test


During the biochemical test the addition of methyl red to which of the following media will produce a red layer

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Vanessa 2020-07-09T19:16:30+00:00 1 Answer 282 views New Member 0

Answer ( 1 )


    MR positive gives red layer and it’s depend on the type of test that we are performing and the type of bacteria as well.. like if are using MR-VP broth and add the inoculum of E.coli bacteria and the incubate for 24 hrs. after 24hrs add the 4-5 drops of Methyl red (indicator) that case, it produces the red layer..


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