標準號：BS ISO 14897-2002
中文標準名稱：塑料.生產聚氨基甲酸乙酯用多元醇.水含量測定
英文標準名稱：Plastics - Polyols for use in the production of polyurethane - Determination of water content
標準類型：G31
發布日期：2002/7/29 12:00:00
實施日期：2002/7/29 12:00:00
中國標準分類號：G31
國際標準分類號：83.040.30
適用范圍：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.