# 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 7.2

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

In the case of substances resistant to the treatment described under 7.1, proceed as follows: after ashing for three hours, place the ash in warm water and filter through a small, ash-free filter. Ash the filter and its contents in the original crucible. Place the filtrate in the cooled crucible, evaporate until dry, ash and weigh.

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/III/division/M/division/7/division/7.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-III/division-M/division-7/division-7.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.