{
  "url": "https://openlegislation.uk/eu-directive-2006-40/annex/part-2",
  "json_url": "https://openlegislation.uk/eu-directive-2006-40/annex/part-2.json",
  "legislation": "eudr/2006/40",
  "legislation_title": "Directive 2006/40/EC of the European Parliament and of the Council of 17 May 2006 relating to emissions from air-conditioning systems in motor vehicles and amending Council Directive 70/156/EEC (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2006-40",
  "path": "annex/part/2",
  "kind": "part",
  "number": "2",
  "heading": "Method of calculating the total global warming potential (GWP) for a preparation",
  "text": "The total GWP for a preparation is a weighted average, derived from the sum of the weight fractions of the individual substances multiplied by their GWPs.\nΣ (Substance X % × GWP) + (Substance Y % × GWP) + … (Substance N % × GWP)\nwhere % is the contribution by weight with a weight tolerance of +/- 1 %.\nFor example: applying the formula to a theoretical blend of gases consisting of 23 % HFC-32; 25 % HFC-125 and 52 % HFC-134a;\nΣ (23 % × 550) + (25 % × 3 400) + (52 % × 1 300)\n→ Total GWP = 1 652,5.",
  "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/2006/40/annex/part/2",
    "retrieved_at": "2026-11-01T15:22:37.162866+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."
}