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Residual solvents

Hemp and medical cannabis consumers are increasingly opting for potent concentrates such as budder, hash oil, shatter, wax, etc. To make these products, cannabinoids and terpenes are often isolated from the flowers (or buds) and other plant materials using a solvent-based extraction process. This process usually begins with a solvent wash and extraction, winterization, isolation, and clean-up. Solvents (CO2, ethanol, or other hydrocarbons) are then eliminated using methods such as heat or pressure. This removal process is critical for the health of consumers.


We use Head Space Sample Loop introduction coupled with Gas Chromatography and Mass Spectrometry to detect 22 solvents. 

Test Duration: 1-3 days


  • Benzene**   

  • Chloroform

  • Acetone

  • Acetonitrile

  • Butane

  • Ethanol

  • Heptane  

  • Hexane** 

  • Isopropyl alcohol  

  • Methanol  

  • Pentane 

  • Propane

  • Toluene**

  • Total xylenes (o-, m-, p-)  

  • Diethyl Ether (Ethyl Ether)

  • Methylene Chloride

  • Ethyl Acetate 

  • 1, 2 Dichloroethane

  • Tricholroethane

  • 1,2 Dichloroethene

  • 1, 1, 1 Trichloroethane

  • Carbon Tetrachloride

** Contaminants in solvents


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