{
  "url": "https://openlegislation.uk/eu-regulation-2009-152/annex-V/division-B/chapter-III/division-3/division-3.3",
  "json_url": "https://openlegislation.uk/eu-regulation-2009-152/annex-V/division-B/chapter-III/division-3/division-3.3.json",
  "legislation": "eur/2009/152",
  "legislation_title": "Commission Regulation (EC) No 152/2009 of 27 January 2009 laying down the methods of sampling and analysis for the official control of feed (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2009-152",
  "path": "annex/V/division/B/chapter/III/division/3/division/3.3",
  "kind": "division",
  "number": "3.3",
  "heading": null,
  "text": "Requirements for GC-MS techniques\nMonitoring of at least the following number of molecular ions or characteristic ions from the molecular cluster:\n(a)two specific ions for HRMS;\n(b)three specific ions for LRMS;\n(c)two specific precursor ions, each with one specific corresponding transition product ion for for MS-MS.\nMaximum permitted tolerances for abundance ratios for selected mass fragments:\nRelative deviation of abundance ratio of selected mass fragments from theoretical abundance or calibration standard for target ion (most abundant ion monitored) and qualifier ion(s): ± 15 %",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2017/771 of 3 May 2017 amending Regulation (EC) No 152/2009 as regards the methods for the determination of the levels of dioxins and polychlorinated biphenyls (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2009/152/annex/V/division/B/chapter/III/division/3/division/3.3",
    "retrieved_at": "2026-11-01T14:51:38.610873+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."
}