Residual Solvents

About Residual Solvents

Cannabis concentrate products like extracts, tinctures, edibles, waxes, and oils are growing in popularity and consumption. Most concentrate products are obtained by extracting out cannabinoids and terpenes from the cannabis flower using a solvent like butane, propane, methanol or ethanol. Occasionally, some solvents remain in the concentrate after the extraction process. These residual solvents could be harmful if consumed. Prolonged exposure to residual solvents could result in euphoria, drowsiness, asphyxia, fluctuations in blood pressure, and cardiac arrhythmia.


In accordance with MRA Rule 47(8), samples containing residual solvents with a higher value in parts per million (ppm) than the acceptable action limit are determined to have failed testing.

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