PEC Chromogenic Agar

Principles and uses
PEC Chromogenic Agar is a selective medium specially formulated for the isolation and detection of E. coli, Pseudomonas aeruginosa and Candida albicans.
For cosmetics and other topical products, the detection of skin pathogens such as Staphylococcus aureus, Pseudomonas aeruginosa, and Candida albicans may be relevant because they can cause skin or eye infection. The detection of other kinds of microorganisms might be of interest since these microorganisms (including indicators of faecal contamination e.g. Escherichia coli) suggest hygienic failure during the manufacturing process.
The medium contains peptone, which provides nitrogen, vitamins, minerals, and amino acids essential for growth. The addition of tryptophan to the medium allows the performance of the Indole test for further E. coli confirmation. The mixture of chromogenic substrates allows the identification of the different species and the bacteriological agar is the solidifying agent.