Posted by NickD (209.83.95.76) on April 05, 2000 at 11:52:00:
In Reply to: I try to explain... posted by Riccardo on April 05, 2000 at 11:21:33:
that fills my suppliers "medical" tanks, maybe I am paranoid, but somehow industrial oxygen doesn't seem right for medical use, all the air is compressed into a liquid state and refined similar to gasoline extraction, but the cleaniness standards are just not there that you would expect for any medical supplies, for one thing, it would be darn cheaper to buy directly from the welder and instead of those dinky tanks, get a four footer, I am glad I switched to a concenstrator, least I know what I am breathing and know that the activated charcoal filter has been changed least every ten years, well, every 3 months, saw no filters at the welding shop, but who needs filtered oxygen for burning?