# 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 5.2: Extraction

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

Weigh to the nearest 0,01 g, approximately 20 g of the prepared sample and transfer to a 250 ml conical flask. Add 100,0 ml of methanesulfonic acid solution (3.4) and shake mechanically (4.1) for 30 minutes. Filter the solution through a filter paper and retain the filtrate for the liquid-liquid partition step (5.3).

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/VIII/division/A/division/5/division/5.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-A/division-5/division-5.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.