Chromogenic UTI medium (Clear) formulation contains two chromogenic substrates which are cleaved by the ß-galactosidase and ß-glucosidase enzymes produced by E. coli, Enterococcus species, and coliforms. These specific enzyme reactions cleave the chromogens giving a range of diagnostic colors.

• Easy-to-read: the ß-galactosidase activity of E. coliand S. saprophyticus results in pink colonies and the ß-glucosidase activity of enterococci produces blue colonies; the activity of both enzymes on coliforms gives purple colonies. Tryptophan deaminase activity produces a brown halo around colonies of Proteus, Morganella, and Providencia species. Most other organisms exhibit their natural pigmentation
• Easier multiple sample testing: clear background makes multiple sample testing easier

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Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.