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U.S. Department of Health and Human Services


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BAM Media M40a: CHROMagar Listeria

January 2003

Bacteriological Analytical Manual

CHROMagar Listeria
(CHROMagar Listeria is available commercially)


This proprietary selective medium differentiates L. monocytogenes and L. ivanovii from other Listeria species based on these species' phospholipases. Differential activity for all Listeria species is due to the addition of a chromogenic substrate. CHROMagar, Paris, France, produces the medium. Follow the manufacturer's instructions.  http://www.chromagar.com