# Regulation (EC) No 648/2004 of the European Parliament and of the Council of 31 March 2004 on detergents (Text with EEA relevance), Division: ANION-EXCHANGE COLUMN

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

Place 600 ml anion-exchange resin (4.3.7) in a 3 000 ml beaker and cover by adding 2 000 ml deionised water.
Allow the resin to swell for at least two hours.
Transfer the resin into the column by means of deionised water. The column should contain a glass-wool plug.
Wash the column with 0,3 M ammonium bicarbonate solution (4.3.5) until free of chloride. This requires about 5 000 ml solution. Wash again with 2 000 ml deionised water. Displace the water with 2 000 ml isopropanol/water mixture (4.3.3) at a rate of 10-30 ml/min. The exchange column is now in the OH-form and ready for operation.
Ion-exchange procedure

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Source: https://www.legislation.gov.uk/eur/2004/648/annex/VIII/division/4/division/4.4/division/4.4.3/division/1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2004-648/annex-VIII/division-4/division-4.4/division-4.4.3/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.