{
  "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.3/division-9.3.2/division-9.3.2.4",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/division-9/division-9.3/division-9.3.2/division-9.3.2.4.json",
  "legislation": "eur/2017/654",
  "legislation_title": "Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-654",
  "path": "annex/VI/division/9/division/9.3/division/9.3.2/division/9.3.2.4",
  "kind": "division",
  "number": "9.3.2.4",
  "heading": "Sample storage media",
  "text": "In the case of bag sampling, gas volumes shall be stored in sufficiently clean containers that minimally off-gas or allow permeation of gases. Good engineering judgment shall be used to determine acceptable thresholds of storage media cleanliness and permeation. To clean a container, it may be repeatedly purged and evacuated and may be heated. A flexible container (such as a bag) within a temperature-controlled environment, or a temperature controlled rigid container that is initially evacuated or has a volume that can be displaced, such as a piston and cylinder arrangement, shall be used. Containers meeting the specifications in the following Table 6.6 shall be used.\nTable 6.6\nGaseous Batch Sampling Container Materials\nAs long as aqueous condensation in storage container is prevented.\nUp to 313 K (40 °C).\nUp to 475 K (202 °C).\nAt 464 ± 11 K (191 ± 11 °C).\nCO, CO2, O2, CH4, C2H6, C3H8, NO, NO2\npolyvinyl fluoride (PVF) for example TedlarTM, polyvinylidene fluoride for example KynarTM, polytetrafluoroethylene for example TeflonTM, or stainless steel\nHC\npolytetrafluoroethylene or stainless steel",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "footnote",
      "label": "f1",
      "text": "As long as aqueous condensation in storage container is prevented."
    },
    {
      "type": "footnote",
      "label": "f2",
      "text": "Up to 313 K (40 °C)."
    },
    {
      "type": "footnote",
      "label": "f3",
      "text": "Up to 475 K (202 °C)."
    },
    {
      "type": "footnote",
      "label": "f4",
      "text": "At 464 ± 11 K (191 ± 11 °C)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VI/division/9/division/9.3/division/9.3.2/division/9.3.2.4",
    "retrieved_at": "2026-11-01T14:45:01.864924+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."
}