{
  "url": "https://openlegislation.uk/preservatives-in-food-regulations-1989/schedule-5/part-II/paragraph-3",
  "json_url": "https://openlegislation.uk/preservatives-in-food-regulations-1989/schedule-5/part-II/paragraph-3.json",
  "legislation": "uksi/1989/533",
  "legislation_title": "The Preservatives in Food Regulations 1989",
  "legislation_url": "https://openlegislation.uk/preservatives-in-food-regulations-1989",
  "path": "schedule/5/part/II/paragraph/3",
  "kind": "paragraph",
  "number": "3",
  "heading": "Reagents",
  "text": "The following reagents shall be used–\n(a) concentrated sulphuric acid solution;\n(b) silicone-based anti-foaming emulsion;\n(c) cyclohexane (analytical reagent grade);\n(d) hexane (analytical reagent grade);\n(e) ethanol (analytical reagent grade);\n(f) anhydrous sodium sulphate;\n(g) silica gel GF 254 (Merck or equivalent);\n(h) standard 1 per centum (weight/volume) solution of pure biphenyl in cyclohexane: dilute with cyclohexane to obtain the following three solutions–\n(i) 0.6 μg/μl;\n(ii) 1 μg/μl;\n(iii) 1.4 μg/μl.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1989/533/schedule/5/part/II/paragraph/3",
    "retrieved_at": "2026-10-29T15:46:33.935266+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."
}