{
  "url": "https://openlegislation.uk/eu-regulation-1991-2568/annex-XVII/division-6/division-6.3/division-6.3.1",
  "json_url": "https://openlegislation.uk/eu-regulation-1991-2568/annex-XVII/division-6/division-6.3/division-6.3.1.json",
  "legislation": "eur/1991/2568",
  "legislation_title": "Commission Regulation (EEC) No 2568/91 of 11 July 1991 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis",
  "legislation_url": "https://openlegislation.uk/eu-regulation-1991-2568",
  "path": "annex/XVII/division/6/division/6.3/division/6.3.1",
  "kind": "division",
  "number": "6.3.1",
  "heading": null,
  "text": "Working conditions for split injection:\ninjector temperature: 300 °C,\ndetector temperature: 320 °C,\nintegrator-recorder: the parameters for integration should be fixed so as to give a correct assessment of the areas. Valley-valley integration mode is recommended,\nsensitivity: about 16 times the minimum attenuation,\namount of solution injected: 1μl,\noven programming temperatures: initial 235 °C for six minutes and then rising at 2 °C/minute up to 285 °C,\ninjector with 1: 15 flow divider,\ncarrier: helium or hydrogen at about 120 kPa pressure.\nThese conditions may be adjusted in accordance with the characteristics of the chromatograph and the column to give chromatograms meeting the following requirements: internal standard peak within approximately five minutes of the time given in 6.3.2; the internal standard peak should be at least 80 % of the full scale.\nThe gas chromatographic system must be checked injecting a mixture of the stock solution of cholestadiene (5.6) and n-nonacosane solution (5.8). The cholesta-3,5-diene peak must appear before the n-nonacosane (Figure 1c); if it does not occur two actions can be undertaken: reduce the oven temperature and/or use a less polar column.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Inserted by Commission Regulation (EC) No 656/95 of 28 March 1995 amending Regulation (EEC) No 2568/91 on the characteristics of olive oil and olive-residue oil and on the relevant methods of analysis and Council Regulation (EEC) No 2658/87 on the tariff and statistical nomenclature and on the Common Customs Tariff."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/1991/2568/annex/XVII/division/6/division/6.3/division/6.3.1",
    "retrieved_at": "2026-11-01T15:01:50.986318+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."
}