{
  "url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-25f./paragraph-8",
  "json_url": "https://openlegislation.uk/fertilisers-sampling-and-analysis-regulations-northern-ireland-1996/schedule-2/part-I/chapter-25f./paragraph-8.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/25f./paragraph/8",
  "kind": "paragraph",
  "number": "8",
  "heading": "EXPRESSION OF RESULTS",
  "text": "See Method 25d (8).\nThe percentage of cobalt in the fertiliser is given by:\nCo%=[(xs-xb)×V×D]/(M×104) If Method 25c is used:\nCo%=[(xs-xb)×V×2D]/(M×104) where:\nCo is the quantity of cobalt expressed as a percentage of the fertiliser;\nxs is the concentration in μg/ml of the Co in the test solution (6.2);\nxb is the concentration in μg/ml of the Co in the blank solution (7.1);\nV is the volume in ml of extract obtained in accordance with Method 25a or 25b;\nD is the factor corresponding to the dilution carried out in 6.2;\nM is the mass in grams of the test sample taken in accordance with Method 25a or 25b.\nCalculation of the dilution factor D: if (a1), (a2), (a3), . . . , (ai) and (a) are aliquot portions and (v1), (v2), (v3), . . . , (vi) and (100) are the volumes in ml corresponding to their respective dilutions, the dilution factor D is given by:\nD=(v1/a1)×(v2/a2)×(v3/a3)x . . . x (vi/ai)×(100/a).",
  "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/25f./paragraph/8",
    "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."
}