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. ).
This method is also intended to be used as one of the recommended methods for the determination of fineness in jewellery alloys covered by .
Status: PublishedPublication date: 2023-02
Edition: 3Number of pages: 7
Technical Committee: ISO/TC 174 Jewellery and precious metals
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