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R2A Agar
The R2A (Reasoner’s 2A) agar is a medium destined for the enumeration of total viable aerobic microorganisms in treated water such as purified water, highly purified water and water for injectable preparation.
The R2A medium is in accordance with European Pharmacopoeia (former medium S).
Available as dehydrated medium: 500 g bottle
Also available as ready-to-use medium: 10 vials of 100 ml (BM18308)
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.
Present in small quantity, the nutritive elements permit the development of stressed microorganisms.
The combination of mineral salts maintains the osmotic balance.
The presence of sodium pyruvate activates the bacterial metabolism.
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