{
  "url": "https://openlegislation.uk/eu-regulation-1986-1764/annex/division-9/division-4/division-4.5",
  "json_url": "https://openlegislation.uk/eu-regulation-1986-1764/annex/division-9/division-4/division-4.5.json",
  "legislation": "eur/1986/1764",
  "legislation_title": "Commission Regulation (EEC) No 1764/86 of 27 May 1986 laying down minimum quality requirements for products processed from tomatoes under the production aid scheme",
  "legislation_url": "https://openlegislation.uk/eu-regulation-1986-1764",
  "path": "annex/division/9/division/4/division/4.5",
  "kind": "division",
  "number": "4.5",
  "heading": "Preparation of calibration curve",
  "text": "Take four 10-ml volumetric flasks and pour 1 ml concentrated nitric acid and 1 ml 5 % lanthanum solution (2.3) into each.\nPour 0, 1, 3 and 5 ml respectively of a 10-ppm calclium solution into the flasks and make up to the mark with double-distilled water.\nDetermine the absorbance of each solution and plot the calibration curve after subtracting the blank value from the standards.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/1986/1764/annex/division/9/division/4/division/4.5",
    "retrieved_at": "2026-11-01T15:04:59.708846+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."
}