{
  "url": "https://openlegislation.uk/eu-directive-1979-796/annex-II/division-5/division-4/division-4.1",
  "json_url": "https://openlegislation.uk/eu-directive-1979-796/annex-II/division-5/division-4/division-4.1.json",
  "legislation": "eudr/1979/796",
  "legislation_title": "First Commission Directive of 26 July 1979 laying down Community methods of analysis for testing certain sugars intended for human consumption (79/796/EEC)",
  "legislation_url": "https://openlegislation.uk/eu-directive-1979-796",
  "path": "annex/II/division/5/division/4/division/4.1",
  "kind": "division",
  "number": "4.1",
  "heading": "Copper II solution (Muller's solution)",
  "text": "4.1.1. Dissolve 35 g of copper II sulphate, pentahydrate (CuSO4.5H2O) in 400 ml of boiling water. Allow to cool.\n4.1.2. Dissolve 173 g of sodium potassium tartrate tetrahydrate (Rochelle salt or Seignette salt; KNaC4H4O64H2O) and 68 g of anhydrous sodium carbonate in 500 ml of boiling water. Allow to cool.\n4.1.3. Transfer both solutions (4.1.1 and 4.1.2) to a one litre volumetric flask and make up to one litre with water. Add 2 g of activated carbon, shake, allow to stand for several hours and filter through thick filter paper or a membrane filter.\nIf small amounts of copper I oxide appear during storage, the solution should be re-filtered.",
  "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/eudr/1979/796/annex/II/division/5/division/4/division/4.1",
    "retrieved_at": "2026-11-01T15:23:41.440766+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."
}