{
  "url": "https://openlegislation.uk/eu-regulation-1991-2568/annex-XVIII/annotation/1",
  "json_url": "https://openlegislation.uk/eu-regulation-1991-2568/annex-XVIII/annotation/1.json",
  "legislation": "eur/1991/2568",
  "legislation_title": "Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis",
  "legislation_url": "https://openlegislation.uk/eu-regulation-1991-2568",
  "path": "annex/XVIII/annotation/1",
  "kind": "division",
  "number": null,
  "heading": null,
  "text": "Note 1 : The elution order can be determined by calculating the equivalent carbon numbers, often defined by the relation ECN = CN − 2n , where CN is the carbon number and n is the number of double bonds; it can be calculated more precisely by taking into account the origin of the double bond. If n o , n l and n ln are the numbers of double bonds attributed to oleic, linoleic and linolenic acids respectively, the equivalent carbon number can be calculated by means of the relation of the formula:\nEN = CN − d o n o − d l n l − d ln n ln\nwhere the coefficient d o , d l and d ln can be calculated by means of the reference triglycerides. Under the conditions specified in this method, the relation obtained will be close to:\nECN = CN − 2,60 n o − 2,35 n l − 2,17 n ln",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Implementing Regulation (EU) No 299/2013 of 26 March 2013 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/1991/2568/annex/XVIII/annotation/1",
    "retrieved_at": "2026-11-01T15:01:50.986318+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."
}