{
  "url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-14c./paragraph-3",
  "json_url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-14c./paragraph-3.json",
  "legislation": "nisr/1996/513",
  "legislation_title": "Fertilisers (Sampling and Analysis) Regulations (Northern Ireland) 1996",
  "legislation_url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996",
  "path": "schedule/2/part/I/chapter/14c./paragraph/3",
  "kind": "paragraph",
  "number": "3",
  "heading": "REAGENTS",
  "text": "3.1 Analytical-grade chromium VI oxide; CrVIO3\n3.2 Sulfuric acid diluted to 60% by volume: pour 360 ml of water into a one litre beaker and carefully add 640 ml of sulfuric acid, density at 20°C ρ = 1.83 g/ml.\n3.3 Silver nitrate: 0.1 M solution.\n3.4 Barium hydroxide: weigh out 15 grams of barium hydroxide (Ba(OH)2.8H2O), and dissolve completely in hot water. Allow to cool and transfer to a one-litre flask. Fill up to the mark and mix. Filter through a pleated filter paper.\n3.5 Hydrochloric acid: 0.1 M standard solution.\n3.6 Sodium hydroxide: 0.1 M standard solution.\n3.7 Bromophenol blue: solution of 0.4 grams per litre in water.\n3.8 Phenolphthalein: solution of 2 grams per litre in 60% by volume ethanol.\n3.9 Soda lime: particle dimensions, about 1.0 to 1.6 mm.\n3.10 Demineralised water, freshly boiled to remove carbon dioxide.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/nisr/1996/513/schedule/2/part/I/chapter/14c./paragraph/3",
    "retrieved_at": "2026-10-29T02:32:40.012993+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."
}