{
  "url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-20./paragraph-4",
  "json_url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-20./paragraph-4.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/20./paragraph/4",
  "kind": "paragraph",
  "number": "4",
  "heading": "REAGENTS",
  "text": "4.1 Diluted hydrochloric acid:\nOne volume of hydrochloric acid (ρ = 1.18 g/ml) plus one volume of water.\n4.2 1:10 dilute sulfuric acid:\nOne volume of sulfuric acid (ρ = 1.84 g/ml) in ten volumes of water.\n4.3 1:1 dilute ammonia solution:\nOne volume of ammonia (ρ = 0.88 g/ml) and one volume of water.\n4.4 Saturated solution of ammonium oxalate [(NH4)2 C2O4 H2O] at ambient temperature (approximately 40 g per litre).\n4.5 Citric acid solution, 30% (m/v).\n4.6 Ammonium chloride solution, 5% (m/v).\n4.7 Solution of bromothymol blue in 95% ethanol, 0.1% (m/v).\n4.8 Solution of bromocresol green in 95% ethanol, 0.04% (m/v).\n4.9 Standard solution of potassium permanganate, 0.02 M.",
  "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/20./paragraph/4",
    "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."
}