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  Home > Microbiology > Media/Reagent > Dehydraded Media > Alpha Bioscience >

  EMB Agar, 500 grams

Your Price $54.07

Product Code: E05-102-500GM

Description Extended Information
Eosin Methylene Blue Agar was first developed by Holt-Harris and Teague. This formula contains both lactose and sucrose with the two indicator dyes, eosin Y and methylene blue. Escherichia and Enterobacter species can be easily distinguished from other Gram negative enteric bacilli using this medium. EMB Agar contains two mildly selective dyes, eosin Y and methylene blue, which interact under strong acidic conditions to impart metallic sheen to Escherichia coli colonies. In addition, E coli produces dark blue-black colonies. Other coliforms produce mucoid, pinkish brown colonies. Non-lactose fermenting bacteria Salmonella and Shigella, produce translucent or colorless colonies. Acinetobacter, Aeromonas, Pseudomonas, Plesiomonas and Yersinia also grow on this medium. Gram-positive bacteria are inhibited by eosin Y. The slow lactose fermenters also ferment sucrose which reduces the incidence of false-positive interpretations.  Eosin Methylene Blue Agar is used for the isolation and identification of Gram negative enteric bacteria. (Alpha Biosciences # E05-102-500gm)

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