# 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 7: Observation

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

If filtration proves difficult recommence the analysis, replacing the 50 ml of hydrochloric acid (3.1) by 50 ml of 20 % trichloroacetic acid (3.2) and washing the filter in a warm solution of 1 % trichloroacetic acid (3.3).

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/III/division/N/division/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-III/division-N/division-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.