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Contact PCA + TTC + Neutralizers
Plate Count Agar (PCA) supplemented with TTC and neutralizers is a ready-to-use media. The media is used for the detection and enumeration of microorganisms present on surfaces allowing its use to control critical points in industry (examples: protected areas, microbiological monitoring programs of surfaces and industrial environments).
Available as:
Ready-to-use medium : 20 plates of Ø 65mm
In compliance with regulatory requirements, a USDA permit (VS 16-3) is mandatory for shipments from Canada to the USA due to the inclusion of peptone, an animal byproduct.
The media forms a convex meniscus that allows direct application of the agar to the control areas, whether on walls, floors, utensils, or staff. The media contains several neutralizers that inhibit any disinfectant residues on the surfaces to be tested, in order to assess the levels of contamination before and after disinfection of the food chain environment.
The neutralizers are selected to inactivate disinfectant residues that may be present on the surfaces, such as aldehydes and phenols, quaternary ammoniums, and oxidising compounds.
TTC (triphenyl tetrazolium chloride) is reduced to insoluble formazan by bacteria (including Proteus and Pseudomonas), giving a red coloration to colonies.
