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Greetings all.
I was presented with an interesting question related to oxygen supply and knew you would be the people to approach. Given that there are four main types of industrial oxygen markets out there; medical, aviation, welding and research, what are the main differences in them other than cost. My understanding is that welding oxygen can be of higher purity than the medical stuff and aviation can be considerably cheaper. I went on a transport to the far north once and found that the oxygen cylinders were labelled (I believe) 98% USP versus what I thought was the 99.99% USP norm.
I realize that legalities play an important part, but couldn't one argue that a higher refined product meant for welding be as good or better than say, and oxygen concentrator? I have found one article that has circulated in many many web sites that briefly mentions it.