The patented Actero™ STEC Enrichment Media is used for the selective growth of Shiga-Toxin producing E. coli (STEC). Actero™ promotes faster selective growth and enrichment of the STEC strains. The product consists of a 500g bottle of dehydrated media and 3 supplement vials (yields 30L rehydrated media). This formulation is part of the “Elite” line of enrichment media products.