BS EN ISO 23900-4:2018规定了一种相对于标准测定聚乙烯（PE）中试验颜料的着色性能的方法，以及根据不同条件下分散着色剂着色强度的差异测定颜料分散DHPE的难易程度。该方法适用于白色颜料。以这种方式确定的分散易度仅对所使用的分散设备、分散条件和分散介质有效。使用不同于规定的试验条件可能会产生不同的结果；这既适用于绝对量，也适用于各种颜料易分散性值之间的关系。因此，下标DHPE用于指定ISO 23900本部分规定的数值。交叉引用: ISO 787-24:1985ISO 15528ISO 18314-1包含以下内容:勘误表，2018年10月

BS EN ISO 23900-4:2018 specifies a method of determining the colouristic properties of a test pigment in polyethylene (PE) relative to a standard, and the ease of dispersion DHPE of pigments from the differences in tinting strength of dispersing colouring materials under various conditions.The method is appropriate for use with white pigments.The ease of dispersion determined in this way is valid only for the dispersion equipment, dispersion conditions and dispersion medium being used. The use of test conditions differing from those specified can give different results; this applies both to the absolute magnitude and to the relation between values of the ease of dispersion of various pigments. The subscript DHPE is therefore used to designate the value obtained as specified in this part of ISO 23900.Cross References:ISO 787-24:1985ISO 15528ISO 18314-1Incorporates the following:Corrigendum, October 2018