Can I use an argon gas cylinder for nitrogen?

[DontKnowSquat]

It's been years since I posted on this forum and had to re-register to the newer forum. Anyhow my question has to do with buying this brand new tank cylinder so I can use it for nitrogen, https://www.harborfreight.com/welding/w ... 92807.html

It's marketed for Argon. Does it make any difference? Will welding supply companies fill it with nitrogen or does it need to be specifically made for Nitrogen? I already have a Nitrogen pressure regulator kit from Mastercool. Somebody please school me....

Thanks!

[bohica2xo]

Nitrogen and Argon cylinders have the same valve. The industry standard for Inert Gasses is CGA 580.

If you have a virgin cylinder they can fill it with nitrogen easily. If it contains Argon now, they will want to "clean" it for gas purity. FYI, you can use Argon to test a system - so if you plan to use Argon later for something like a welding process, you could fill it with Argon now.

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[DontKnowSquat]

Thanks brother....that's good to know.