Cetrimide Agar (USP)

Cetrimide Agar (USP)

Cetrimide Agar is intended primarily for use in the isolation of Pseudomonas aeruginosa from pharmaceutical products and is recommended by the United States Pharmacopoeia for this purpose.
The medium is made selective by the addition of cetrimide to inhibit the growth of most other organisms while allowing Pseudomonas aeruginosa/ and other Pseudomonas spp. to develop a classical colonial appearance, producing green pigmentation and fluoresce when examined under ultra violet light.

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Organisms Ref. No Result
Pseudomonas aeruginosa NCTC 12903 Green colonies
Pseudomonas aeruginosa ATCC 9027 Green colonies
Escherichia coli ATCC 8739 Inhibited

Recommended incubation: Incubate aerobically at 30-35°C for 18-72 hours.