ISO 14897-2002 塑料.用于聚氨酯生产的多元醇.水含量的测定

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标准号:ISO 14897-2002
中文标准名称:塑料.用于聚氨酯生产的多元醇.水含量的测定
英文标准名称:Plastics - Polyols for use in the production of polyurethane - Determination of water content
标准类型:G31
发布日期:1999/12/31 12:00:00
实施日期:1999/12/31 12:00:00
中国标准分类号:G31
国际标准分类号:83.040.30
适用范围:This International Standard 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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