標(biāo)準(zhǔn)號(hào)：ISO 14897-2002
中文標(biāo)準(zhǔn)名稱：塑料.用于聚氨酯生產(chǎn)的多元醇.水含量的測(cè)定
英文標(biāo)準(zhǔn)名稱：Plastics - Polyols for use in the production of polyurethane - Determination of water content
標(biāo)準(zhǔn)類型：G31
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：G31
國(guó)際標(biāo)準(zhǔn)分類號(hào)：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.