IMViC Test

 

IMViC test consist of four different tests namely in Indole test, Methyl Red test, Voges Proskauer test and Citrate utilization test. These tests are mainly for differentiating the various species of Gram negative bacteria based on the biochemical and metabolic activities of these bacteria.

 The name IMViC stands for first letter of the name of each test with ‘i’included for ease of pronunciation. IMViC test are used to determine the sanitary quality of water, food etc. The significance of these tests is that when testing food or water for the presence of sewage indicator E. coli, one must be able to rule out Enterobacter aerogenes, which has many of the morphological and physiological characteristics of  E. coli. Since Enterobacter aerogenes is not always associated with sewage, Its presence would not necessarily indicate the sewage contamination.

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