# Commission Regulation (EC) No 152/2009 of 27 January 2009 laying down the methods of sampling and analysis for the official control of feed (Text with EEA relevance), Division 3.11.1

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

Stock solution of DL-α-tocopherol: Weigh to the nearest 0,1 mg, 100 mg of DL-α-tocopherol (3.10) into a 100 ml graduated flask. Dissolve in ethanol (3.1) and make up to the mark with the same solvent. 1 ml of this solution contains 1 mg DL-α-tocopherol. (UV control see 5.6.2.3; stabilisation see 7.4 observations).

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/IV/division/B/division/3/division/3.11.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-IV/division-B/division-3/division-3.11.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.