BS ISO 20720:2018规定了使用安装在EPMA或SEM上的能量色散光谱仪（EDS）或波长色散光谱仪（WDS）分析粉末中颗粒的试样制备方法。粉末颗粒分析的制备方法按分析目的和粒度进行分类。交叉引用:ISO 14594:2014ISO 22489:2016购买时可用的所有当前修订版均包含在本文件的购买中。

BS ISO 20720:2018 specifies specimen preparation methods for the analysis of particles in powders using energy-dispersive spectrometers (EDS) or wavelength-dispersive spectrometers (WDS) installed on an EPMA or SEM. The preparation methods for powder particle analysis are classified by the analytical purpose and the particle size.Cross References:ISO 14594:2014ISO 22489:2016All current amendments available at time of purchase are included with the purchase of this document.