Thank you for your response. The flame looks fine to my eye and my clears and color are fine too. BUT I will look into a local place to get the O2 purity checked it possible. I called one before and they would not help me.
Quote:
Originally Posted by kbinkster
Yes, a flame can be hissing and not be oxidized if the purity is bad. The hissing is just whistling - gas moving through the tubes quickly. That's all hissing indicates.
A flame from a torch being run on an oxygen concentrator with poor purity will generally look weaker in color than a normal neutral flame (given the same lighting conditions).
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