To distill off the solvent, a small collection pan replaces the expended
cannabis material (which may now be discarded) in the colander. The apparatus is then reassembled and returned to the water bath. The solvent-oil solution in the small stainless steel pot boils; the fumes rise and are condensed on the ice-cooled lid as before. The pure solvent drips into the colander where it is collected in the small pan. The oil remains behind in the stainless steel pot. The collected solvent, which is essentially pure, may be saved for a future extraction.
After the solvent is removed and collected, the stainless steel pot containing the oil should be kept in boiling water to remove all traces of the solvent, if using a toxic solvent, or one containing water, it is advisable u> add ome water to the oil and evaporate it in an oil bath (cottonseed oil works fine) at approximately 220° F. When the water is gone, one can be sure that all traces of the solvent have been removed, as all solvents mentioned here evaporate at a temperature below that of boiling water. The oil may now be eaten or smoked.
TA,Nl.ESS STEEL PAN WITH OH AND WATER SOLUTION .
- DEEP FRY OR CANDY THERMOMETER
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