They are usually cheaper and easier to make than solventless extractions but are made with chemical solvents.ĭecades ago, in the beginning of cannabis extraction, open extractions systems were used, but they are highly flammable, very dangerous, and should never be used anymore. Butane, propane, and other common solvents are also called hydrocarbons, so solvent extraction can also be called hydrocarbon extraction.Ĭommon solvent extractions include: shatter, wax, live resin, budder, badder, crumble, sugar, taffy, and many more. Solvent extractions will often be further refined.īecause butane is primarily used in solvent extractions, these cannabis products are commonly known as BHO, or butane hash oil. The solvent is then purged from the slurry and the cannabis extraction pulled from the machine. To do so, cannabis plant material and a solvent, such as butane, propane, etc., is placed in a contained, closed-loop system for several hours, creating a concentrate slurry, in which the solvent strips trichomes from the plant material. Solvent extractionsĭabs are most commonly made in bulk by commercial extractors. Using frozen plants is cheaper and less labor-intensive for the grower because they don’t have to trim, dry, and cure plants. Using frozen plants gives an extract a live label, such as live resin and live rosin. Nug runs are higher in quality than trim runs because buds have more trichomes.Ĭannabis plants can also be cut down and immediately frozen at harvest, and the whole plant put in an extractor that maintains freezing temperatures throughout the process. When only flower is used to create a batch of concentrates, it’s called a nug run.
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