{
  "url": "https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-D/division-8",
  "json_url": "https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-D/division-8.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/VIII/division/D/division/8",
  "kind": "division",
  "number": "8",
  "heading": "Results of a collaborative study",
  "text": "A collaborative study was arranged in which 6 feed, 4 premixtures and 3 preparations were analysed by 8 laboratories. Duplicate analyses were performed on each sample. (More detailed information on this collaborative study can be found in the Journal of the AOAC, Volume 71, 1988, p. 484-490). The results (excluding outliers) are shown below:\nTable 1\nResults of the collaborative study for feed\nSample 1\nSample 2\nSample 3\nSample 4\nSample 5\nSample 6\nL\n8\n8\n8\n8\n8\n8\nn\n15\n14\n15\n15\n15\n15\nMean (mg/kg)\n50,0\n47,6\n48,2\n49,7\n46,9\n49,7\nSr (mg/kg)\n2,9\n2,69\n1,38\n1,55\n1,52\n2,12\nCVr (%)\n5,8\n5,6\n2,9\n3,1\n3,2\n4,3\nSR (mg/kg)\n3,92\n4,13\n2,23\n2,58\n2,26\n2,44\nCVR (%)\n7,8\n8,7\n4,6\n5,2\n4,8\n4,9\nNominal content (mg/kg)\n50,0\n50,0\n50,0\n50,0\n50,0\n50,0\nTable 2\nResults of the collaborative study for premixtures and preparations\nPremixtures\nPreparations\nA\nB\nC\nD\nA\nB\nC\nL\n7\n7\n7\n7\n8\n8\n8\nn\n14\n14\n14\n14\n16\n16\n16\nMean (g/kg)\n8,89\n9,29\n9,21\n8,76\n94,6\n98,1\n104\nSr (g/kg)\n0,37\n0,28\n0,28\n0,44\n4,1\n5,1\n7,7\nCVr (%)\n4,2\n3,0\n3,0\n5,0\n4,3\n5,2\n7,4\nSR (g/kg)\n0,37\n0,28\n0,4\n0,55\n5,4\n6,4\n7,7\nCVR (%)\n4,2\n3,0\n4,3\n6,3\n5,7\n6,5\n7,4\nNominal content (g/kg)\n10,0\n10,0\n10,0\n10,0\n100\n100\n100\nLnumber of laboratories\nnnumber of single values\nSrstandard deviation of repeatability\nCVrcoefficient of variation of repeatability\nSRstandard deviation of reproducibility\nCVRcoefficient of variation of reproducibility.",
  "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/2009/152/annex/VIII/division/D/division/8",
    "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."
}