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Microbial Detection using Chromogenic Media

Rainbow® Agars offer a simple selective and chromogenic medium to help you conveniently detect strains of E. coli O157, Salmonella, Shigella and Aeromonas with results in less than 24 hours

Rainbow Agar O157

Rainbow Agar O157 has both selective and chromogenic properties that make it particularly useful for isolating pathogenic E. coli strains, to aid in the detection, isolation and presumptive identification of verotoxin-producing strains of Escherichia coli, particularly serotype O157:H7.

Rainbow Agar Salmonella

Rainbow Agar Salmonella utilizes an enhanced detection chemistry to determine H2S production among Salmonella spp., Black colonies are formed by even weak H2S producing strains. In addition, novel selective agents increase the recovery rate of Salmonella while inhibiting the growth of other enteric bacteria and inhibiting H2S production by Citrobacter and other H2S positive enteric species.

Rainbow Agar Shigella/Aeromonas

Rainbow Agar Shigella/Aeromonas was developed to provide laboratories with a better culture medium for directly isolating pathogenic strains of Shigella and Aeromonas. Species of these genera can be important causative agents of gastroenteritis. The medium is inhibitory to gram-positive bacteria and most non-enteric gram-negative bacteria, but is not toxic to the target species.