{
  "url": "https://openlegislation.uk/eu-regulation-2000-2870/annex/division-III/division-III.2/division-9",
  "json_url": "https://openlegislation.uk/eu-regulation-2000-2870/annex/division-III/division-III.2/division-9.json",
  "legislation": "eur/2000/2870",
  "legislation_title": "Commission Regulation (EC) No 2870/2000 of 19 December 2000 laying down Community reference methods for the analysis of spirits drinks",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2000-2870",
  "path": "annex/division/III/division/III.2/division/9",
  "kind": "division",
  "number": "9",
  "heading": "Calculation",
  "text": "An automated system of data handling can be used, provided the data can be checked using the principles described in the method below.\nMeasure either peak areas or peak heights for congener and internal standard peaks.\n9.1.\nResponse factor calculation.\nFrom the chromatogram of the injection of standard solution C (5.14.3), calculate response factors for each congener using equation (1). where:\nIS Internal Standard\nConc. congener concentration of congener in solution C (5.14.3)\nConc. IS concentration of internal standard in solution C (5.14.3).\n9.1.2.\nSample analysis\nUsing equation (2) below, calculate the concentration of each congener in the samples. where:\nMSAMPLE weight of sample (8.1.2);\nMIS weight of internal standard (8.1.3);\nConc. IS concentration of internal standard in solution E (5.14.5);\nRF response factor calculated using equation 1.\n9.1.3.\nQuality control standard solution analysis\nUsing equation (3) below, calculate the percentage recovery of the target value for each congener in the quality control standards (5.14.7):\nThe concentration of the analyte in the QC standard is calculated using equations (1) and (2) above.\n9.2.\nFinal presentation of results\nResults are converted from μ/g to g per 100 litres absolute alcohol for samples using equation (4): where\nρ density in kg/m3.\nResults are quoted to 3 significant figures and a maximum of one decimal place e.g. 11,4 g per 100 l absolute alcohol.",
  "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/2000/2870/annex/division/III/division/III.2/division/9",
    "retrieved_at": "2026-11-01T14:57:07.594471+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."
}