Talk:Shielding gas

NOS?
I haven't found any documentation on why C-25 is commonly called "N.O.S.", and is even labelled that way by some distributors. I'm also curious about the densities of these gasses so I can tell by weight how full a bottle is.Steve8394 (talk) 16:25, 5 September 2013 (UTC)

External links modified
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