{
  "url": "https://openlegislation.uk/eu-directive-1980-181/annex/chapter-I/division-1/division-1.4",
  "json_url": "https://openlegislation.uk/eu-directive-1980-181/annex/chapter-I/division-1/division-1.4.json",
  "legislation": "eudr/1980/181",
  "legislation_title": "Council Directive of 20 December 1979 on the approximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC (80/181/EEC)",
  "legislation_url": "https://openlegislation.uk/eu-directive-1980-181",
  "path": "annex/chapter/I/division/1/division/1.4",
  "kind": "division",
  "number": "1.4",
  "heading": "Special authorized names and symbols of decimal multiples and submultiples of SI units",
  "text": "The two symbols ‘ I ’ and ‘ L ’ may be used for the litre unit.\n(Sixteenth CGPM (1979), resolution 6).\nUnit listed in the International Bureau of Weights and Measures booklet as among the units to be permitted temporarily.\nQuantity\nUnit\nName\nSymbol\nValue\nVolume\nlitre\n1 or L\n1 l = 1 dm 3 = 10 -3 m 3\nMass\ntonne\nt\n1 t = 1 Mg = 10 3 kg\nPressure, stress\nbar\nbar\n1 bar = 10 5 Pa",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "X",
      "label": "X1",
      "text": "Substituted by Corrigendum to Council Directive 80/181/EEC of 20 December 1979 on the aproximation of the laws of the Member States relating to units of measurement and on the repeal of Directive 71/354/EEC (Official Journal of the European Communities No L 39 of 15 February 1980)."
    },
    {
      "type": "footnote",
      "label": "f1",
      "text": "The two symbols ‘ I ’ and ‘ L ’ may be used for the litre unit. (Sixteenth CGPM (1979), resolution 6)."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Unit listed in the International Bureau of Weights and Measures booklet as among the units to be permitted temporarily."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/1980/181/annex/chapter/I/division/1/division/1.4",
    "retrieved_at": "2026-11-01T15:23:40.868248+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."
}