{
  "url": "https://openlegislation.uk/eu-regulation-1986-1764/annex/division-9/division-4/division-4.2/division-4.2.2",
  "json_url": "https://openlegislation.uk/eu-regulation-1986-1764/annex/division-9/division-4/division-4.2/division-4.2.2.json",
  "legislation": "eur/1986/1764",
  "legislation_title": "Commission Regulation (EEC) No 1764/86 of 27 May 1986 laying down minimum quality requirements for products processed from tomatoes under the production aid scheme",
  "legislation_url": "https://openlegislation.uk/eu-regulation-1986-1764",
  "path": "annex/division/9/division/4/division/4.2/division/4.2.2",
  "kind": "division",
  "number": "4.2.2",
  "heading": "Dry ashing",
  "text": "Weigh out 5 to 10 g of sample, according to assumed quantity of calcium, into a platinum dish (3.2).\nDry in muffle furnace or on hot place or under infra-red lamp, on a gentle, slow heat to avoid losing matter through boiling over. Place residue in muffle furnace preheated to 400 °C and incinerate for at least six hours.\nIf cadmium is present, a few drops of phosporic or sulphuric acid should be added.\nIf the ash is not completely white, it should be wetted with a few drops of nitric acid, the product should be dried completely under the infra-red lamp until there are no more white fumes, and treatment in the muffle furnace should be repeated for at least four hours.\nMix the ash with 1 ml nitric acid, transfer to the 50 ml volumetric flask and make up to the mark with water.",
  "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/1986/1764/annex/division/9/division/4/division/4.2/division/4.2.2",
    "retrieved_at": "2026-11-01T15:04:59.708846+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."
}