Used as a selective enrichment medium for the detection and isolation of coliform bacteria and Escherichia coli from water, food, and environmental samples. Supports the growth of gram-negative bacteria while inhibiting gram-positive organisms due to the presence of bile salts. Often employed in microbiological testing to assess water quality and food safety by detecting fecal contamination. Commonly used in conjunction with fermentation tubes to detect gas production, indicating the presence of lactose-fermenting coliforms. Suitable for use in both qualitative and quantitative methods in public health and industrial laboratories.