Numéro de référence
ISO 14897:2002
© ISO 2024
ISO 14897:2002
Plastiques — Polyols pour la production du polyuréthanne — Dosage de l'eau
Edition 2
2002-06
Annulée
Annulée (Edition 2, 2002)

Résumé

ISO 14897 specifies methods used to measure the water content of polyols employed as polyurethane raw materials. Method A is a manual amperometric method which has been included to better define the principles of the Karl Fischer measurement. Amperometric methods are applicable to a wide range of polyols, including those which have enough colour to obscure a visual end-point. Method B includes an automated amperometric procedure and an automated coulometric procedure. The coulometric procedure is an absolute method that does not require calibration and gives improved sensitivity compared with amperometric methods.

Informations générales

  • État actuel
     : Annulée
    Date de publication
     : 2002-06
    Stade
    : Annulation de la Norme internationale [95.99]
  • Edition
     : 2
  • Comité technique :
    ISO/TC 61/SC 12
    ICS :
    83.080.10 
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