NUTRIENT AGAR (pH 6.8) (as per ISO)

Nutrient Agar (pH 6.8) is used as a general-purpose medium for testing of water, sewage, faeces & other materials. It is a basic culture medium used for maintenance or to check purity of subcultures prior to biochemical or serological tests. This medium is recommended for presumptive isolation of Salmonella and Yersinia colonies. Nutrient Agar, pH 6.8 has relatively simple formulation which provides the necessary nutrients for the growth of many microorganisms which are not very fastidious. Many bacteria have the optimum pH growth range of 6.6 to 7.0. Greenberg and Cooper used this medium in cultivation of Staphylococci for the preparation of vaccines and antigens. Wetmore and Gochenour maintained cultures of Malleomyces and Pseudomonas on Nutrient Agar to which glycerol was added.

a general purpose nutrient medium for testing of water, sewage, faeces & other materials