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Mannitol Salt Agar
Mannitol Salt agar is used for the selective isolation, detection and enumeration of pathogenic staphylococci in filterable water as in swimming pools, potable water or spas. It is also used for the detection of Staphylococcus aureus according to the Pharmacopeia and in cosmetic products.
The typical composition responds to the formulation defined in the European Pharmacopeia, and in the Directive NF T90-421 for the water control and in the Directive NF EN ISO 22718 in cosmetics.
Available as dehydrated medium : 500 g bottle
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 high sodium chloride concentration inhibits the growth of most bacteria other than staphylococci.
Mannitol fermentation, shown by the color change of the pH indicator (phenol red) to yellow orients the diagnosis.
The demonstration of pathogenic staphylococci is generally confirmed by a coagulase test.