{
  "url": "https://openlegislation.uk/eu-regulation-2017-644/annex-III/division-7/division-7.3/division-7.3.1",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-644/annex-III/division-7/division-7.3/division-7.3.1.json",
  "legislation": "eur/2017/644",
  "legislation_title": "Commission Regulation (EU) 2017/644 of 5 April 2017 laying down methods of sampling and analysis for the control of levels of dioxins, dioxin-like PCBs and non-dioxin-like PCBs in certain foodstuffs and repealing Regulation (EU) No 589/2014 (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-644",
  "path": "annex/III/division/7/division/7.3/division/7.3.1",
  "kind": "division",
  "number": "7.3.1",
  "heading": "Use of the lower band of the 95 % prediction interval at the decision limit of the confirmatory method",
  "text": "Cut-off value=BEQDL−sy,x×tα,f=m−21∕n+1∕m+xi−x–2∕Qxxwith:\nBEQDL BEQ corresponding to the decision limit of the confirmatory method, being the ML taking into account the expanded measurement uncertainty\nsy,x residual standard deviation\nt α,f = m – 2 student factor (α = 5 %, f = degrees of freedom, single-sided)\nmtotal number of calibration points (index j)\nnnumber of repetitions on each level\nxi sample concentration (in TEQ) of calibration point I determined by a confirmatory method\nx–mean of the concentrations (in TEQ) of all calibration samples\nQxx=∑j=1mxi−x–2 square sum parameter\niindex for calibration point i",
  "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/2017/644/annex/III/division/7/division/7.3/division/7.3.1",
    "retrieved_at": "2026-11-01T14:45:03.439389+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."
}