Freebase is the more traditional form of e juice, with nicotine that is closer to its purest form, thus having a higher pH. Freebase e juices have a different proportion of Vg to Pg because of this, so instead of 50/50 like salts, they are 70/30. 70VG and 30 percent PG. This allows the smoke, when going directly to the lungs, to be completely enjoyable, even in large amounts. The nicotine levels for freebase e juices come at 0mg, 3mg, 6mg, 12 mg, 18mg and 24mg.