CBDfx uses 100% organically grown CBD, sourced from organic hemp farms while in the USA. Their CBD ejuices come in 30ml bottles As well as in a few different CBD strengths: 250mg, 500mg or 1000mg. All of their CBD ejuices have an ideal ratio of PG/VG that vapes well http://midtowncigar232.pages10.com/The-smart-Trick-of-spectrum-hemp-oil-That-Nobody-is-Discussing-34805959