{
  "url": "https://openlegislation.uk/eu-directive-1983-514/annex/division-9/division-9.1",
  "json_url": "https://openlegislation.uk/eu-directive-1983-514/annex/division-9/division-9.1.json",
  "legislation": "eudr/1983/514",
  "legislation_title": "Third Commission Directive of 27 September 1983 on the approximation of the laws of the Member States relating to methods of analysis necessary for checking the composition of cosmetic products (83/514/EEC)",
  "legislation_url": "https://openlegislation.uk/eu-directive-1983-514",
  "path": "annex/division/9/division/9.1",
  "kind": "division",
  "number": "9.1",
  "heading": "Calculating a response factor of a substance ‘p’ relative to a substance ‘a’ selected as an internal standard",
  "text": "Let the first substance be ‘p’, where:\nkp its response factor,\nmp its mass in the mixture,\nAp its peak area.\nLet the second substance be ‘a’, where:\nka its response factor (made equal to unity),\nMa its mass in the mixture,\nAa its peak area,\nthen:\nk p = m p × A a M a × A p\nAs examples the following response factors have been obtained (for chloroform: k = l):\nDichloromethane: k1 = 0,78 ± 0,03\n1,1,1-trichloroethane: k2 = 1,00 ± 0,03",
  "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/1983/514/annex/division/9/division/9.1",
    "retrieved_at": "2026-11-01T15:23:36.810601+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."
}