Lauryl Sulfate Broth

Tryptose 20.0; lactose 5.0; sodium chloride 5.0; sodium lauryl sulfate 0.1; di-potassium hydrogen phosphate 2.75; potassium di-hydrogen phosphate 2.75.

Selective culture medium used as a presumptive test for coliform bacteria and for the selective enrichment of coliform organisms in the analysis of water.