NSL offers several post processing services to further purify extracts.
Winterization is a technique used for removing plant waxes from crude extracts. The extract is dissolved in ethanol and then frozen. While plant waxes are soluble in ethanol at low temperatures, they become insoluble when frozen. As the temperature of the oil mixture drops, wax crystals precipitate and grow. Once precipitated, the wax is removed from the oil through filtration. Ethanol is removed with a rotary evaporator.
In distillation, heat and pressure are used to evaporate the extract and separate desired cannabinoids from any remaining unwanted compounds. Distillate are extremely potent.
SUPERCRITICAL FLUID CHROMATOGRAPHY (SFC)
Through Supercritical Fluid Chromatography it is possible to selectively fractionation individual cannabinoids.