{
  "url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-10./paragraph-7",
  "json_url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-10./paragraph-7.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/10./paragraph/7",
  "kind": "paragraph",
  "number": "7",
  "heading": "EXPRESSION OF RESULTS",
  "text": "If the samples for analysis and dilutions shown in the Table are used the following formulae apply:\n%P2O5inthefertiliser=(A-a)×f %Pinthefertiliser=(A-a)×f' where:\nA = weight in g of the quinoline phosphomolybdate\na = mass in g of the quinoline phosphomolybdate obtained in the blank test\nf and f' = factors given in the last two columns of the Table.\nWith samples for analysis and dilutions which differ from those of the Table the following formulae apply:\n%P2O5inthefertiliser=(A-a)×f×D×100M %Pinthefertiliser=(A-a)×f'×D×100M where:\nf = conversion factor, quinoline phosphomolybdate into P2O5 = 0.0321\nf' = conversion factor, quinoline phosphomolybdate into P = 0.0140\nD = dilution factor\nM = mass of the sample analysed.\nTABLE FOR METHOD 10\n% P2O5 in the fertiliser\n% P in the fertiliser\nSample for analysis ml\nDilution to ml\nSample ml\nDilution to ml\nSample to be precipitated ml\nQuinoline phosphomolybdate conversion factor (f) in percentage P2O5\nQuinoline phosphomolybdate conversion factor (f') in percentage P\n1-5\n0.44-2.2\n1\n500\n—\n—\n100\n16.04\n7.00\n2.5\n500\n—\n—\n50\n12.83\n5.60\n5\n500\n—\n—\n25\n12.83\n5.60\n5-10\n2.2-4.4\n1\n500\n—\n—\n50\n32.07\n14.00\n2.5\n500\n—\n—\n25\n25.66\n11.20\n3\n500\n—\n—\n25\n21.38\n9.33\n5\n500\n—\n—\n10\n32.07\n14.00\n10-25\n4.4-11.0\n1\n500\n—\n—\n25\n64.15\n28.00\n2.5\n500\n—\n—\n10\n64.15\n28.00\n3\n500\n—\n—\n10\n53.46\n23.33\n5\n500\n50\n500\n50\n64.15\n28.00\n+ 25\n+ 11\n1\n500\n—\n—\n10\n160.40\n70.01\n2.5\n500\n50\n500\n50\n128.30\n55.99\n3\n500\n50\n500\n50\n106.90\n46.66\n5\n500\n50\n500\n25\n128.30\n55.92",
  "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/10./paragraph/7",
    "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."
}