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.
BS ISO 14897-2002由英国标准学会 GB-BSI 发布于 2002-07-29,并于 2002-07-29 实施。
BS ISO 14897-2002 在中国标准分类中归属于: G31 合成树脂、塑料基础标准与通用方法,在国际标准分类中归属于: 83.040.30 塑料的辅料和添加剂。
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