Residual Solvent Screening

Residual solvents are the chemicals that are left over from the manufacturing process of cannabis concentrates. Depending on the process, varying amounts can remain and impact the quality of the end product.  These solvents include familiar household products like rubbing alcohol (iso-alcohol/2-propanol) to less familiar ones like heptane.  Obviously, less solvent and more cannabis is better.

Cannabis concentrates require skill to produce.

Per California regulations, we test for the following solvents by headspace GC-MS:

  • Propane
  • Ethylene Oxide
  • Butane
  • Isopropyl Alcohol
  • Methanol
  • Pentane
  • Ethanol
  • Ethyl Ether
  • Acetone
  • Acetonitrile
  • Methylene Chloride
  • Hexane
  • Ethyl Acetate
  • Chloroform
  • Benzene
  • 1,2-Dichloroethane
  • Heptane
  • Trichloroethylene
  • Toluene
  • Xylenes