On Jun 20, 8:47*am, "Ed Pawlowski" wrote:
"Some Guy" wrote

Like I just said, the presence of impurities does not necessarily equate
to medical safety or have a health impact. *If those impurities are
nitrogen or water vapor, then what exactly are the health implications
of those?

But if the analysis does not say what the impurities are, you are trading on
dangerous ground. * That welding tank may have been used along with any
other gas used in industrial environments.



You can't use welding O2 for medical purposes

Says who?

A lawyer? *Or a biochemist?

Lawyers and other sensible people that do not know what other gas may be in
there. *Oxygen falls into the same type of situation ad drugs. *The active
ingredients of a pill are often a small percentage of the tablet, the rest
being inert ingredients. *There are regulations on what those inert
ingredients can be. *There are regulations on how they are handled.

If I was dying in an emergency situation from lack of oxygen, I'd grab any
tank available. If I was at home with COPD, I'd want to be sure that tank
was handled in a proper manner and would not make me worse off.

exactly as I was taught in First Aid. Any tank of oxy (be sure it is
oxy and not just compressed air) will do in an emergency but use
medical for extended periods.

Harry K