I just bought a 30# bottle of r12 refrigerant for a whopping price of $30
I would guess that it is about 80% full, give or take. It is in the non-refillable-disposable bottle.
I did an acid test and it came out clean, but my question is; Is it true that these disposable type bottles have a one-way valve in it?
If it does, then I know the stuff is pure. If not, is there any way I can test purity?