Sorry if this is a repost, but I tried searching.

Well i was wondering is it okay if I use a High Purity specialty gas two stage regulator made for Airgas? Found a cheap one and just wanted to know if i should get it or not sorry if this has been answered and sorry I'm still a noob

Might find it on the web and post a picture here for more help.

I use the Victor Medalist CO2 series regulators and I am happy with them. Airgas carries these. You must do a little DIY to them (ie. fittings, solenoids, needle valves). Very accurate, no fluctuations or dumping.