Originally Posted by Drunk Monkey
Can you put nitrogen, or beer gas (75% NO 25% CO2), in a CO2 tank? Do you need to get a nitrogen regulator or can you use a CO2 regulator?
At least two online articles say yes, nitrogen and mix can be put in CO2 tank. My local gas company says no, or at least they won't charge up the tank with wrong type. They explain that CO2 can be in liquid form while the other does not, and therefore their internal pressure are different, thus different tank for each. But nitrogen, beer gas mix and argon and helium (?) use the same tank.