Help ! R2A agar

Neal Machtiger neal_m at
Wed Nov 15 20:15:51 EST 2000

In addition, after the 5-7 day incubation period, you may find your plate counts
HIGHER than on media such as Eugon of TSA. Many heterotrphic GNB find TSA or
Eugon too nutrient rich for them to grow out.


Bob Friedel wrote:

> R2A is a low-nutrient agar designed to cultivate organisms from low nutrient
> environments (oligotrophs) such as purified water systems.  It is available
> from BD Bioscience (1-800-638-8663).  The one drawback to using R2A is that
> the incubation period is generally longer than higher nutrient media such as
> Plate Count Agar.
> Bob Friedel
> Quality Assurance Manager
> Perritt Laboratories
> rfriedel at
> Simon Lee <pedlcy at> wrote in message
> news:wSLP5.71$fj7.1688 at
> > Is there any one who know teh R2A media used in bacterial contamination of
> > water ?
> > Please Help me
> > Simon Lee
> >
> >

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