Standard

ISO 3423:1975

Actuel

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Résumé

Applicable of products the SO2 content of which is equal to or more than 2 mg/kg. Based on the displacement of the sulphur dioxide present in the test portion by a current of pure nitrogen and absorption in a known volume of iodine solution. Titration of the excess of iodine with standard volumetric sodium thiosulphate solution. The diagram of the glass apparatus for absorption is shown in a figure.

Spécifications des produits

  • Standard de ISO
  • Publié:
  • Version: 1
  • Type de document: IS
  • Pages
  • Editeur: ISO
  • Distributeur: ISO
  • ICS: 71.060.30
  • Comité international: ISO/TC 47