{
  "url": "https://openlegislation.uk/eu-regulation-2011-1007/annex-VIII/chapter-2/division-1/division-IV/division-3/division-4",
  "json_url": "https://openlegislation.uk/eu-regulation-2011-1007/annex-VIII/chapter-2/division-1/division-IV/division-3/division-4.json",
  "legislation": "eur/2011/1007",
  "legislation_title": "Regulation (EU) No 1007/2011 of the European Parliament and of the Council of 27 September 2011 on textile fibre names and related labelling and marking of the fibre composition of textile products and repealing Council Directive 73/44/EEC and Directives 96/73/EC and 2008/121/EC of the European Parliament and of the Council (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2011-1007",
  "path": "annex/VIII/chapter/2/division/1/division/IV/division/3/division/4",
  "kind": "division",
  "number": "4",
  "heading": "TEST PROCEDURE",
  "text": "Follow the procedure described in the general instructions and proceed as follows: place the specimen immediately in the flask, pre-heated to 40 °C. Add 100 ml of the solution of formic acid and zinc chloride, pre-heated to 40 °C per gram of specimen. Insert the stopper and shake the flask vigorously. Keep the flask and its contents at a constant temperature of 40 °C for 2,5 hours, shaking the flask at hourly intervals.\nFilter the contents of the flask through the weighed filter crucible and with the help of the reagent transfer to the crucible any fibres remaining in the flask. Rinse with 20 ml of reagent pre-heated to 40 °C.\nWash crucible and residue thoroughly with water at 40 °C. Rinse the fibrous residue in approximately 100 ml of cold ammonia solution (3.2(b)) ensuring that this residue remains wholly immersed in the solution for 10 minutes; then rinse thoroughly with cold water.\nDo not apply suction until each washing liquor has drained under gravity.\nFinally, drain the remaining liquid with suction, dry the crucible and residue, and cool and weigh them.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "To ensure that the fibrous residue is immersed in the ammonia solution for 10 minutes, one may, for example, use a filter crucible adaptor fitted with a tap by which the flow of the ammonia solution can be regulated."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2011/1007/annex/VIII/chapter/2/division/1/division/IV/division/3/division/4",
    "retrieved_at": "2026-11-01T14:49:51.401191+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."
}