{
  "url": "https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-D/division-5/division-5.1/division-5.1.2",
  "json_url": "https://openlegislation.uk/eu-regulation-2009-152/annex-VIII/division-D/division-5/division-5.1/division-5.1.2.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/5/division/5.1/division/5.1.2",
  "kind": "division",
  "number": "5.1.2",
  "heading": "Recovery test",
  "text": "A recovery test shall be carried out by analysing the blank feed (5.1.1) which has been fortified by the addition of a quantity of carbadox, similar to that present in the sample. To fortify at a level of 50 mg/kg, transfer 5,0 ml of the stock standard solution (3.11.1) to a 200 ml conical flask. Evaporate the solution to approximately 0,5 ml in a stream of nitrogen. Add 10 g of the blank feed, mix and wait for 10 minutes before proceeding with the extraction step (5.2).\nAlternatively, if a blank feed similar in type to that of the sample is not available (see 5.1.1), a recovery test can be performed by means of the standard addition method. In this case, the sample is fortified with a quantity of carbadox, similar to that already present in the sample. This sample is analysed, together with the unfortified sample and the recovery can be calculated by subtraction.",
  "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/5/division/5.1/division/5.1.2",
    "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."
}