Genghis77 said:Is N2O Nitrous Oxide. If so, that's laughing gas and a controlled substance. CO2 should be both cheaper and easier to find.
vtfan99 said:Generally you will have to get a nitrogen regulator as the "beer gas" mix is at a higher pressure...so its in a different bottle with a different size pipe thread coming out of it. Not to mention the normal CO2 regulator isn't rated high enough for the higher pressure of the beer gas mix.
That said, if you have the $$ for the setup, you really cant be a good stout or scottish/scotch ale through a nitro tap....yummy stuff.