Unknown ID

Gram Staining

Gram Negative

Gram Positive

Pink

Violet

Coccus (Neisseria, Veillonella)

Bacillus

Alcaligenes, Pseudomonas, Vibrio spp.

Enterobacteriaceae

Non-Lactose Fermenters

Lactose Fermenters

Negative Staining

Negative Staining

Oxidase Negative

Oxidase Positive

EMB, HEA, and MAC Negative for Lactose Fermentation

EMB, HEA, and MAC Positive for Lactose Fermentation

Erwinia cacticida, Salmonella bongori, Salmonella enterica, Serratia marcesens, Serratia liquefaciens, Shigella sonnei, Yersinia pestis

Nitrogenase Negative

Nitrogenase Positive

Non-Sulfur reducers

(Edwardsiella tarda, Proteus vulgaris)

Sulfur reducers

(Morganella morganii, Providencia stuartii)

SIM Sulfur Reduction Positive

API Test: H2S Positive

SIM Sulfur Reduction Negative

API Test: H2S Negative

Providencia stuartii

API Test: Ornithine Decarboxylase Positive

API Test: Ornithine Decarboxylase Negative

Morganella morganii

Non-indole producing

SIM Indole Negative

Indole Negative

Proteus