Iso (isopropyl hash oil)

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When alcohol (specifically isopropyl) is used as a solvent to strip trichomes from plant material, the resulting hash oil is normally refered to as “iso” hash oil. Though generally a less dangerous and equipment-intensive process than making BHO or CO2 oil, it is still essential to try to remove all of the residual alcohol from the extract, as vaporizing alcohol sugars can cause lung issues in some patients. Unlike the more selective butane, isopropyl often pulls chlorophyll as well as the cannabinoids, which necessitates a quick wash method, also known as “QWISO”.

iso