Real Science. Real Testing. Real Results.™

Chromatography is the most commonly used method for analyzing chemical compounds. Gas Chromatography (GC) is the analytical procedure used to separate and identify individual chemical substances from a mixture of substances by heating and turning the sample to a gas. GC is accomplished with the sample being heated to a gas (volatilization). The gas is passed through a separating column and as the separated materials leave the column they are measured by a detector.  GC is the preferred chromatography method for cannabis testing, because it most represents the most commonly used end us of cannabis, combustion.

Gas Chromatography Mass Spectrometry (GC/MS) separates the ions of a compound in order to identify a specific analyte in the sample. This is done by shattering the volatilized sample into their corresponding ions. GC/MS is the preferred method for testing cannabis products that are or will be heated for consumption or processing.

High Pressure Liquid Chromatography (HPLC) requires the use of chemical solvents to push the sample through the separating column, at the end of which the separated materials are detected optically and measured. HPLC is the preferred method for testing raw cannabis or cannabis extracts that will never be heated for processing.

We use the following equipment in our laboratory:

  • Gas Chromatography Mass Spectrometry (GC/MS)
  • Gas Chromatography Mass Spectrometry (GC/MS with Purge and Trap)
  • Gas Chromatography Flame Ionization Detector (GC/FID)
  • High Pressure Liquid Chromatography (HPLC/DAD)