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Lactic acid is an organic acid. It has a molecular formula CH 3CH(OH)COOH. It is white in the solid state and it is miscible with water.<br />This service provides a simple and rapid capillary electrophoresis method with direct ultraviolet (UV) detection for the determination of organic acids in beverages. The method includes dilution and filtration as simple sample preparation steps. The electrophoretic separation and detection of oxalic, malic, citric and lactic acids in wines and beers is performed in 8 min.