R2A medium was developed to determine the bacterial count including heterotrophic bacteria in potable waters during treatment and distribution. This medium has a low nutritional content and therefore requires extended incubation times. It is recommended by the Environmental Agency, Methods for the Examination of Waters and Associated Materials, and Standard Methods for the Enumeration of Water and Wastewater.
|Shelf Life (days)|
|Storage Temp (°C)|
|Aeromonas hydrophila||NCTC 8049||Grey Colonies|
|Pseudomonas aeruginosa||NCTC 12903||Grey Colonies|
|Pseudomonas aeruginosa||ATCC 9027||Grey colonies|
|Bacillus subtilis||NCTC 10400||Grey colonies|
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