Are there different grades of compressed O2? Wondering if the O2 used in the bags for shipping fish is the same quality of O2 that you'd find in say a torch tank????
It all comes from the same source you don't buy Medical grade. You go to Gas supplier they fill medical tanks and welding tanks from the same bulk tank. What they do to it after is what makes it Medical Grade. Some hospitals add moisture. All Hospitals use a compressor to pump the oxygen welders only use the compression of the tank.