High grade Cetrimide Agar is supplied by Micromaster. It is available in the form of a cream to yellow homogenous free flowing powder which has a pH in the range of 7.0 to 7.4. This product should be stored between 10-30C in a tightly closed container. Once opened, it should be properly stored, after tightly capping the bottle. Due to the hygroscopic nature of the product, there could be chances of lump formation which can be avoided by proper storage. Store in dry ventilated area protected from extremes of temperature and sources of ignition.

Quantity provided: 500 g/pack

Cetrimide Agar was described by King et a. This media formulation is in accordance with the harmonized method of USP/EP/BP/JP/IP and is used as a selective medium for the isolation of Pseudomonas aeruginosa from pharmaceutical products. It is also used for microbial limit testing for non-sterile products and for determining the ability of an organism to produce fluorescein and pyocyanin. Cetrimide (N-acetyl-N,N,N- trimethylammonium bromide) is incorporated in the medium to inhibit bacteria other than Pseudomonas aeruginosa. Cetrimide acts as a cationic detergent, as a quaternary ammonium compound, which causes nitrogen and phosphorus to be released from bacterial cells other than Pseudomonas aeruginosa. Magnesium chloride and potassium sulphate in the medium enhances the production of a blue-green pigment, pyocyanin which improves the detection of Pseudomonas on this medium. Presence of magnesium ions neutralize any EDTA present in the sample. Gelatin peptone provides the essential nutrients for growth of Pseudomonas, while glycerin serves as slow and continuous carbon source for the growing cell.