本文件规定了测定铂合金中铂的重量法。样品中的铂含量最好在50至999份/千（‰）之间（按重量计）。999‰以上的细度可通过差分光谱法测定（如ISO 15093）。 该方法也可作为ISO 9202涵盖的珠宝合金细度测定的推荐方法之一。

This document specifies a gravimetric method for the determination of platinum on a material considered homogeneous. The platinum content of the sample lies preferably between 50 and 999 parts per thousand (‰) by mass. Fineness above 999 ‰ can be determined using a spectroscopy method by difference (e.g. ISO 15093). This method is also intended to be used as one of the recommended methods for the determination of fineness in jewellery alloys covered by ISO 9202.