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SRPS EN ISO 11426:2021

Jewellery and precious metals - Determination of gold - Cupellation method (fire assay) (ISO 11426:2021)

Aug 31, 2021

General information

60.60     Aug 31, 2021


PKS C174

European Norm





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This document specifies a cupellation method (fire assay) for the determination of gold on a material considered homogeneous. The gold content of the sample lies preferably between 100 and 999,5 parts per thousand (‰) by weight. Fineness above 999,5 ‰ can be determined using a spectroscopy method by difference (e.g. ISO 15093).
The procedure is applicable to most types of gold samples. Some modifications are indicated for specific cases (presence of large amount of base metals, platinum or palladium, silver). It is not compatible with the presence above trace levels of iridium, rhodium and ruthenium (more than 0,25 ‰ for the sum of all three elements).
This method is also intended to be used as the recommended method for the determination of fineness in jewellery alloys covered by ISO 9202.

Life cycle


SRPS EN ISO 11426:2017


SRPS EN ISO 11426:2021
60.60 Standard published
Aug 31, 2021

Related project

Adopted from EN ISO 11426:2021

Adopted from ISO 11426:2021


,,Сл. Гласник РС“ бр. 18/2022 18/2022
PRAVILNIK o načinu ispitivanja i žigosanju predmeta od dragocenih metala i njihovih legura