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R2a agar
R2A agar is a culture medium developed to study bacteria which normally inhabit potable water. These bacteria tend to be slow-growing species and would quickly be suppressed by faster-growing species on a richer culture medium. Since its development in 1979, it has been found to allow the culturing of many other bacteria that will not readily grow on fuller, complex organic media.
Typical Composition (g/l)
Proteose peptone, 0.5
Casamino acids, 0.5
Yeast extract, 0.5
Glucose, 0.5
Soluble starch, 0.5
Dipotassium phosphate, 0.3
Magnesium sulfate 7H2O, 0.05
Sodium pyruvate, 0.3
Agar, 15
Final pH 7.2 ± 0.2 @ 25 °C
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "R2a_agar". A list of authors is available in Wikipedia.
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