Although there are a variety of methods available, supercritical CO2 extraction is our method of choice when extracting active compounds from botanical material for several reasons.  The more common methods utilize a series of volatile and toxic solvents to free the active compounds from the organic substrate.  This can be particularly problematic since the resulting extracts retain solvent residues which compromise the purity of the extracted compound. With supercritical CO2, mild operating temperature ensures product stability and quality leaving extracts and spent biomass completely free of solvent residues and contaminants resulting in true “pharmaceutical grade” compounds. Supercritical CO2 is also universally accepted as a "friendly", clean and fully recyclable solvent where product recovery is accomplished via a simple pressure reduction leaving no hazardous residues whatsoever.