Eugonic LT 100 Broth Base is recommended for the enrichment and detection of mesophilic aerobic bacteria present in cosmetic products. The composition and performance criteria of the medium are as per the specifications laid down in ISO 21149. Lecithin and Polysorbate 80 added to this medium neutralizes antimicrobial agents hence it can be used as a neutralizing diluent. L-Cystine and sodium sulphite are added to stimulate growth of fastidious organisms.