BS ISO 14897-2002 塑料.生产聚氨基甲酸乙酯用多元醇.水含量测定

标准号：BS ISO 14897-2002
中文标准名称：塑料.生产聚氨基甲酸乙酯用多元醇.水含量测定
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：2002/7/29 12:00:00
实施日期：2002/7/29 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.