{
  "url": "https://openlegislation.uk/eu-regulation-2019-934/annex-I/division-5/division-1/division-2",
  "json_url": "https://openlegislation.uk/eu-regulation-2019-934/annex-I/division-5/division-1/division-2.json",
  "legislation": "eur/2019/934",
  "legislation_title": "Commission Delegated Regulation (EU) 2019/934 of 12 March 2019 supplementing Regulation (EU) No 1308/2013 of the European Parliament and of the Council as regards wine-growing areas where the alcoholic strength may be increased, authorised oenological practices and restrictions applicable to the production and conservation of grapevine products, the minimum percentage of alcohol for by-products and their disposal, and publication of OIV files",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2019-934",
  "path": "annex/I/division/5/division/1/division/2",
  "kind": "division",
  "number": "2",
  "heading": "MEMBRANE UTILISATION REQUIREMENTS",
  "text": "The membrane pair is formulated so that the following conditions are met:\nthe pH reduction of the wine is to be no more than 0,3 pH units,\nthe volatile acidity reduction is to be less than 0,12 g/l (2 meq expressed as acetic acid),\ntreatment must not affect the non-ionic constituents of the wine, in particular polyphenols and polysaccharides,\ndiffusion of small molecules such as ethanol is to be reduced and must not cause a reduction in alcoholic strength of more than 0,1 % vol.,\nthe membranes must be conserved and cleaned by approved methods with substances authorised for use in the preparation of foodstuffs,\nthe membranes are marked so that alternation in the stack can be checked,\nthe equipment is to be run using a command and control mechanism that will take account of the particular instability of each wine so as to eliminate only the supersaturation of potassium hydrogen tartrate and calcium salts,\nthe treatment is to be carried out under the responsibility of an oenologist or qualified technician.\nThe treatment is to be recorded in the register referred to in Article 147(2) of Regulation (EU) No 1308/2013.",
  "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/2019/934/annex/I/division/5/division/1/division/2",
    "retrieved_at": "2026-11-01T14:43:20.602911+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."
}