Eosin Methylene Blue Agar, Levine

Eosin Methylene Blue Agar, Levine is a slightly selective and differential plating medium for the isolation of gram-negative enteric bacteria.

Principles: The eosin Y and methylene blue dyes in Levine EMB Agar render the medium slightly selective in that they inhibit gram-positive bacteria to a limited degree. These dyes also play a role in differentiating between lactose fermenters and lactose non-fermenters due to the presence or absence of dye uptake in the bacterial colonies. Coliforms, as lactose-fermenting organisms, are visualized as blue-black colonies, whereas colonies of *Salmonella* and *Shigella*, as lactose non-fermenters, appear colorless, transparent, or amber. Some gram-positive bacteria, such as fecal streptococci, staphylococci, and yeasts, will grow on this medium and usually form pinpoint colonies. A number of nonpathogenic, lactose-nonfermenting gram-negative bacteria will grow on this medium and must be distinguished from the pathogenic strains by additional biochemical tests.

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Item No. Alt. Part No. Product Description Brand Name Mfr. Item No. Packaging Unit of Measure Your Cost Purchase
Eosin Methylene Blue Agar (Levine)Isolation and differentiation of gram-negative bacteria.
3082-00
EF0005-17-6 Eosin Methylene Blue Agar Isolation and Differentiation of Gram-Negative Bacteria. BBL 211221 500 gram Each
$159.21
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