{
  "url": "https://openlegislation.uk/eu-regulation-2009-152/annex-III/division-C/division-3/division-3.18",
  "json_url": "https://openlegislation.uk/eu-regulation-2009-152/annex-III/division-C/division-3/division-3.18.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/III/division/C/division/3/division/3.18",
  "kind": "division",
  "number": "3.18",
  "heading": "Boric acid solution (10 g/l to 40 g/l depending on the apparatus used).",
  "text": "When colorimetric end-point detection is applied, methyl red and bromocresol indicators must be added to the boric acid solutions. If 1 litre of the boric acid solution is prepared, before adjusting to volume, 7 ml methyl red indicator solution (3.16) and 10 ml bromocresol green solution (3.17) shall be added.\nDependent on the water used, the pH of the boric acid solution might differ from batch to batch. Often an adjustment with a small volume of alkali is necessary to obtain a positive blank.",
  "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/III/division/C/division/3/division/3.18",
    "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."
}