The opposite...Aviator is not as.. dry as medical grade correct?
Are Medical and Welder's Oxygen Different Than Aviation Oxygen? - MHOxygen
Q: Is it true that medical and welder’s oxygen differ from aviation oxygen? A: There are no different grades of oxygen being produced or contained in cylinders under DOT regulations. Contrary to common myth, medical oxygen contained in a medical cylinder is no different than that contained in a...
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