PCR COVID-19 RESPONSE: Supporting Employees, Partners, and the Community At Large
Residual Solvents
SAFETY SCREEN
PRICE
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SCOPE OF TEST
n-Butane:limit 1 mg/kg
Propane:limit 1 mg/kg
Ethanol:limit 5000 mg/kg
Isobutane:limit 1 mg/kg
Hexane:limit 290 mg/kg
AMOUNT OF SAMPLE NEEDED
Flower:not applicable
Concentrate:0.5 grams
Extract:not applicable
Infused Products:not applicable
TESTING METHOD
Headspace Gas Chromatography with Flame Ionization Detection (HS-GC-FID)

OVERVIEW

Screening for residual solvents is required only for cannabis products made using a solvent-based extraction method. The amount of residual solvent left in a cannabis concentrate must be shown to be below the allowable limit in milligrams, which varies for each applicable solvent.

WHY IT MATTERS

Concentrated cannabis products made using a solvent must be purged at the end of the extraction process. Trace amounts of the solvent used can remain even after purging, and high concentrations of certain solvents can be harmful if consumed. Screening products for residual solvents helps ensure consumer safety.

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