Lauryl Tryptose Mannitol Broth w/ Tryptophan is used for confirmation of Escherichia coli in drinking water as recommended by report 71. This medium is also recommended by the ISO committee and is also a suitable medium as per the requirements of the EC Directive for the quality of drinking water. This medium may be used in parallel to Lauryl Tryptose Broth (M080) to detect non-lactose fermenting strains of E. coli.
1. Departments of the Environment, Health and Social Security and Public Health Laboratory Service, 1982, TheBacteriological Examination of Drinking Water Supplies, Report on Public Health and Medical Subjects No. 71, HMSO,London.2.International Organization for Standardization (ISO), 1990, Draft ISO/DIS 9308.3.Joint Circular 20/82, Departments of the Environment, 1982, incorporating EC Directive relating to the Quality of Waterintended for Human Consumption (80/778/EEC), HMSO, London.