1.1本规程描述了塑料化合物的显微镜检查，以检查颜料分散体的质量。制备聚合物薄片，用透射光进行观察。显微镜检查通常通过与观察标准进行比较来进行分级或分类。 1.2列出的操作通常适用于许多热塑性化合物。附录X1中给出了I类聚乙烯电线电缆的具体细节。 注1-没有类似或等效的ISO标准。 1.3本标准无意解决与其使用相关的所有安全问题（如有）。 本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This practice describes microscopical examination of plastic compounds to check quality of pigment dispersion. Thin sections of polymers are prepared for observation with transmitted light. Microscopical examination is normally made for grading or classification by comparison against observational standards. 1.2 Operations are listed for practice generally applicable to many thermoplastic compounds. Details specific to wire- and cable-grade Type I polyethylene is given in Appendix X1. Note 1-There is no similar or equivalent ISO standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.