{
  "url": "https://openlegislation.uk/eu-regulation-2004-648/annex-VIII/division-4/division-4.4/division-4.4.5",
  "json_url": "https://openlegislation.uk/eu-regulation-2004-648/annex-VIII/division-4/division-4.4/division-4.4.5.json",
  "legislation": "eur/2004/648",
  "legislation_title": "Regulation (EC) No 648/2004 of the European Parliament and of the Council of 31 March 2004 on detergents (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2004-648",
  "path": "annex/VIII/division/4/division/4.4/division/4.4.5",
  "kind": "division",
  "number": "4.4.5",
  "heading": "The cation exchanger is rejected after use.",
  "text": "Passing an additional quantity of ammonium bicarbonate solution (4.3.5) down the column at a flow rate of approximately 10 ml/min until the eluate is free from anionic surfactants (methylene blue test) regenerates the anion-exchange resin.\nThen pass 2 000 ml isopropanol/water mixture (4.3.3) down the anion exchanger to wash. The anion exchanger is again ready for operation.\nPreliminary treatment of non-ionic surfactants to be tested",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2004/648/annex/VIII/division/4/division/4.4/division/4.4.5",
    "retrieved_at": "2026-11-01T14:55:38.850310+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}