Division 6.1.7: Centrifuge 10 minutes at such a speed as to produce a clear separation of the phases, uncap the tube, withdraw the organic layer and inject 3 μl of the organic phase on to the column of the gas chromatograph (5.2). - Third Commission Directive of 27 September 1983 on the approximation of the laws of the Member States relating to methods of analysis necessary for checking the composition of cosmetic products (83/514/EEC)