Add to cart LP-20 | 70/30I ISOBUTANE-PROPANE BLEND | TANK EXCHANGE $199.00 PRICE LISTED INDICATES WHEN AN EMPTY CYLINDER TANK IS RETURNED TO US IN EXCHANGE FOR A FULL ONE 70% Isobutane 30% N-Propane Blend Liquid solvent net weight is 22lbs/10.kg. 99.95% Ultra High Purity This cylinder has a dip tube. Our product is clean, colorless, non-odorized and free of any hydrogen sulphide-based ethyl mercaptan odorants. EcoGreen Industries products purchased by customers not holding a current CA license for extraction, are available with a proprietary food grade, oil-based odorant. The product has been independently tested and allows customers to maintain consistent and desired results.