Résumé
This document 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.
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Informations générales
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État actuel: PubliéeDate de publication: 2023-06Stade: Norme internationale publiée [60.60]
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Edition: 3
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Comité technique :ISO/TC 61/SC 12ICS :83.080.10
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Cycle de vie
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Précédemment
AnnuléeISO 14897:2002
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Actuellement
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