top of page

Residual Solvents

This testing measures the presence and level of residual solvents in cannabis products that can persist following liquid and some gas extractions.  Verifying the absence or acceptable level of these remaining solvents in your products helps ensure that they are safe for human consumption and use.

Clinical Science Laboratory tests for 13 residual solvents. These include the following: Acetone, Acetonitrile, Butane, Ethanol, Ethyl Acetate, Ethyl Ether, Heptane, n-Hexane, Isopropyl Alcohol, Methanol, n-Pentane, n-Propane, and Toluene. We utilize Head-space gas chromatography with a flame ionization detector (HS-GC-FID) to isolate and quantify these compounds in tested samples.

Residual solvents are exactly as they sound – leftover solvents that remain in a cannabis product (such as CBD oils and tinctures) following extraction. Many of the solvents are toxic to humans, even in dilute amounts; others, while not particularly toxic, may be undesired in the final product as they may change the aromatic and taste profile of the products. Clinical Science Laboratory can detect and quantify levels of residual solvents in hemp samples to ensure maximum safety of the product.

bottom of page