There are just two things I would disagree with rog about.
1)small air ozonators that actually put out what they say they do blow the doors off enaly and their outrageous output claims. 25 mg/hr is more than adequate for a small room.
2)general concensus among serious ozone users and manufacturers would not regard the synergy unit a medical device because it has stainless steel in the gas stream. I have not had the opportunity to speak with John about this yet but plan to do so in the near future. I do not dispute that it's probably a great machine for the money, but I think the envelope is being pushed quite a bit to call it a medical ozonator.
Other than these two niggly points, rog's post is well done and informative as usual.
Thanks for all the great advice you give people rog.
cheers,
Paul