Résumé
PreviewISO 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.
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État actuel: PubliéeDate de publication: 2002-06
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Edition: 2
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- ICS :
- 83.080.10 Matériaux thermodurcissables
Acheter cette norme
| Format | Langue | |
|---|---|---|
| std 1 61 | ||
| std 2 61 | Papier |
- CHF61
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