Polyethylene glycol stationary phase has high thermal stability up to 250°C (482°F) Crossbond™ Carbowax™ technology provides low bleed, increased column life, and solvent rinsability Resist oxidation and thermal breakdown Allow free fatty acids from C1 to C20 to be analyzed without derivatization; also works well for some inorganic acids Individual test chromatogram is provided with each column Applications: Underivatized free fatty acids