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In your message dated Monday 24, June 1996 you wrote : >...Most references to oxygen, in particular, imply > that "welding oxygen" is no different from "medical oxygen".... I don't think they do! George's post was referring to the fittings and hardware, not the gases themselves. > Can anyone assure me, one way or the other, that "welding O2" is no different > from "medical O2". There are differences. I get my O2 & Helium from Air Products, I can fax/send you their full specs for welding/diving/aviation grades if you EMail me back your address or fax no, but briefly, specs for allowable hydrocarbons and methane in particular are around double those for welding gas. Aviation grade (covered by ISO 2046 "Gaseous breathing oxygen supplies for aircraft") is much drier, but I would suggest that this is neither necessary nor even desirable for diving use. > Are there any differences between the grades supplied in the U.S. and those > supplied in the U.K.? Don't know, not huge ones I wouldn't have thought. > Does the U.K H.S.E have anything to say on the matter? Probably, but who cares? Regards Paul --------------------------------------------------------------- | Paul Chapman EMail: paul@de*.de*.co*.uk* | ---------------------------------------------------------------
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