Cetrimide Agar

U.S.P.

LAB 133

Description

A medium recommended by the United States Pharmacopoeia for the isolation of Pseudomonas aeruginosa from pharmacological preparations. Subculture is carried out onto the medium after enrichment in LAB 4 Tryptone Soy Broth. Cetrimide inhibits the growth of many micro organisms whilst allowing P . aeruginosa to develop typical colonies which will fluoresce in ultraviolet light and produce green pigment.