# 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 3.6: Cation-exchange resin Amberlite CG-120 (Na), 100 to 200 mesh

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

The resin is pretreated before use. Slurry 100 g resin with 500 ml hydrochloric acid solution (3.5) and heat on a hot plate to boiling, stirring continuously. Allow to cool and decant off the acid. Filter through a filter paper under vacuum. Wash the resin twice with 500 ml portions of water and then with 250 ml of methanol (3.2). Rinse the resin with a further 250 ml portion of methanol and dry by passing air through the filter cake. Store the dried resin in a stoppered bottle.

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Source: https://www.legislation.gov.uk/eur/2009/152/annex/VIII/division/A/division/3/division/3.6 (the official version)
Page: https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-A/division-3/division-3.6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.