Method Why people only talk about helium and nitrogen but not argon?

[Alreadylate]

I have understood that Helium, Nitrogen and Argon are exactly the same when it comes to the exit bag. But here everybody is using regulators for argon, in order to use nitrogen cylinders... Why not choosing directly Argon? I dont know how it goes in your country, but I see getting the three of those gases is easy they are on ebay. I also understand people is getting Ar regulators because they are the only ones that show flow min/L, maybe those people don't have acces to Ar. In any case I'm curious.

 

[gottacheckout]

I have a cylinder of 100% argon. I weld and use pure argon for aluminum and an argon/CO2 mix for mild steel. I also have a spare cylinder for each. Argon works fine. Several years ago I had to euthanize a wild rabbit that was injured and so tried argon to see how it works, it was quick and peaceful

 

[Alreadylate]

I bought one that is Argon 4.8 which means a purity of 99.998%, it's for welding, I guess that's ok...

 

[gottacheckout]

That's what you want