Gas Chromatography Analysis

Gas chromatography (GC) is an analytical laboratory technique used to separate and identify volatile compounds in cannabis plant material, including terpenes, cannabinoids, and residual solvents. In GC analysis, a sample is vaporized and carried through a heated column by an inert gas, where different compounds separate based on boiling point and molecular interactions. GC paired with flame ionization detection (FID) or mass spectrometry (MS) allows breeders and researchers to generate quantitative terpene profiles—measuring relative percentages of limonene, myrcene, caryophyllene, and other volatile compounds. This data helps establish chemotype signatures within strain families and supports reproducible breeding programs. GC analysis is foundational to understanding the chemical consistency of cannabis genetics across generations.

Breeders use GC-generated terpene data to select parent plants with desired aromatic profiles and to verify that offspring express stable, consistent chemotypes across multiple grows. Detailed GC profiles support strain documentation and help distinguish genetically similar cultivars based on volatile metabolite composition.