Components of a Gas Chromatograph
Gas Supply: (usually N2 or He)

Sample Injector: (syringe / septum)

Column: 1/8Ó or 1/4Ó x 6-50Õ tubing packed with
small uniform size, inert support coated with
thin film of nonvolatile liquid

Detector: TC - thermal conductivity
FID - flame ionization detector