ISO 787-14-2002 颜料和体质颜料的通用试验方法.第14部分:水萃取物电阻率的测定

标准号：ISO 787-14-2002
中文标准名称：颜料和体质颜料的通用试验方法.第14部分:水萃取物电阻率的测定
英文标准名称：General methods of test for pigments and extenders - Part 14: Determination of resistivity of aqueous extract
标准类型：G53
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：G53
国际标准分类号：87.060.10
适用范围：This part of ISO 787 specifies a general method of test for determining the resistivity (specific resistance) of the aqueous extract of a pigment. The method is applicable to all pigments and extenders, except pigments that are substantially soluble in water.It should be noted that the resistivity of the aqueous extract of a pigment should be considered as a property independent of the amount of water-soluble matter. If agreed, a cold extraction method may be used. This shall be stated in the test report, however.The standard temperature of determination should preferably be 23 °C but a different temperature may be agreed between the parties provided that the necessary corrections are made to take account of the differences in temperature.NOTE When this general method is applicable to a given pigment, a cross-reference to it will simply be included in the International Standard relating to that pigment, with a note of any detailed modification which may be needed in view of the special properties of the pigment in question. Only when this general method is not applicable to a particular pigment will a special method for determination of resistivity of aqueous extract be specified.