Chameleon™ COLOREX™ O157 with Potassium Tellurite is a selective and differential, chromogenic used for the isolation of Escherichia coli O157 present in animal and food samples. The E. coli serotype O157:H7, or its non-motile variant O157:H, are the most common VTEC serotype in relation to public health. Samples can include food, meat trimmings, and animal samples. A latex confirmation test for O157 serotype characterization, as well as a positive identification as E. coli, should be completed for suspect colonies. • Product meets CLSI performance criteria.• Chameleon™ COLOREX™ O157 should be used by trained professionals within a laboratory setting. • Product is not intended for use in the diagnosis or treatment of disease or other human conditions.