Product Descripiton At BVV, quality is everything, and our ISO-Butane is certainly no exception. This ISO-Butane is sourced here in the U.S, so you know it's going to be of high purity: we guarantee 99.5% purity. With such high quality, you'll see the results. By cutting down on mystery oils and other contaminants, our instrument-grade solvent will make for a higher quality extract. Odorless and colorless, meaning there are zero hydrogen sulfide-based Ethyl Mercaptan odorants The tank will hold the equivalent of sixty-five 10 oz. butane cans Tank doesn't contain a dip tube and comes in DOT refillable LP tank Actual ISO-butane liquid weight is 20LB Distill solvent before using it | BVV 20LB High Purity USA ISO-BUTANE R600A - 99.5%