標準號：BS EN ISO 787-8-2001
中文標準名稱：顏料和填充劑的一般試驗方法.水溶物的測定.冷萃取法
英文標準名稱：General methods of test for pigments and extenders - Determination of matter soluble in water - Cold extraction method
標準類型：G54
發布日期：2001/1/15 12:00:00
實施日期：2001/1/15 12:00:00
中國標準分類號：G54
國際標準分類號：87.060.10
適用范圍：This part of ISO 787 specifies a general method of test for determining the percentage by mass of matter soluble in cold water, in a sample of pigment or extender. ISO 787-3 specifies a method for determining the percentage by mass of matter soluble in water by hot extraction. For most pigments and extenders, these two test methods will give different results, and it is therefore essential to state clearly in a specification which method is to be used, and in the test report which method has been used. NOTE The general methods given in the various parts of ISO 787 are usually applicable to any pigment or extender. Thus only a cross-reference to the appropriate part of ISO 787 needs to be included in the International Standard giving the specification for that pigment or extender, indicating any detailed modification that may be needed in view of the special properties of the material in question. Only when the general methods are not applicable to a particular material is a different method for determination of water-soluble matter to be specified.