ECD MUG Agar is recommended for demonstrating the presence of Escherichia coli by fluorescence in UV and positive indole test while inhibiting accompanying intestinal flora. Rapid assay for the detection of coliforms and Escherichia coli in water and food samples by incorporating 4-methylumbilliferyl-ß-glucuronide (MUG) in to Lauryl Tryptose Broth