Growth of bacteria in controlled atmosphere

[K N and P J Harris]

Easiest, if not cheapest, is to get one of the big lab gas suppliers to 
make you up a cylinder and then very gently bleed it into your 
incubation container. There is nothing unpleasant in your mix and it can 
vent to atmosphere, the bleed rate can be low because your G's are not 
going to make much impcat on it.
Peter Harris, Reading, UK.
AKA <P.J.Harris at reading.ac.uk>