# 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), Division 6.1: Hydrolysis

Extent: E+W+S+N.I.

Weigh accurate y into a 50 ml round-bottom flask approximately 1 g of the sample (m). Add 5 ml of water and 5 ml of hydrochloric acid (4.3) and boil for one hour, using a reflux condenser. Immediately transfer the hot suspension with water into a 50 ml graduated flask. Allow to cool and make up to the mark with water. Centrifuge at at least 3000 rpm for five minutes and pass the supernatant liquid through a filter.

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Source: https://www.legislation.gov.uk/eudr/1983/514/annex/division/QUANTITATIVE/division/6/division/6.1 (the official version)
Page: https://openlegislation.uk/eu-directive-1983-514/annex/division-QUANTITATIVE/division-6/division-6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.