As I know nothing about oligtrophic bugs I can't comment,
but being highly pedantic, for air samples wouldn't blood agar be considered
a non - selective medium
especially when compared with nutrient agar.
"Bryan" <dbd2 at psu.edu> wrote in message news:38DAE74D.C8625082 at psu.edu...
>>> David Lawton wrote:
>> > "Errol" <E.S.Kwan at massey.ac.nz> wrote in message
> > news:38d98644.180750243 at news.massey.ac.nz...> > > From the sounds of the experiment Riffi wants to sample the air.
> > > Expose the plate and see what grows. For this I would suggest a
> > > nutrient agar plate, not a selective one such as blood agar.
> > >
> > Blood agar, selective?
> > --
> > David Lawton
>> Well in a strict sense, "enrichment", but depending on how you used it
> it could select against oligotrophic bugs, and for pathogens or