MRS Agar, Modified is recommended for the enrichment, cultivation and enumeration of lactic acid bacteria. The composition and performance of this medium are as per the specifications laid down in ISO 15214 :1998.The medium is formulated in accordance with ISO, for the enumeration of mesophilic lactic acid bacteria. It is recommended by APHA for the isolation and cultivation of Lactobacillus species from salad dressings.