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download between 0-24 hoursReleased: 2023
ISO 14897:2023
ISO 14897:2023-Plastics-Polyols for use in the production of polyurethanes
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Standard´s number: | ISO 14897:2023 |
Pages: | 10 |
Edition: | 3 |
Released: | 2023 |
Language: | English |
DESCRIPTION
ISO 14897:2023
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.