SS-EN-ISO-11426 › Jewellery and precious metals - Determination of gold - Cupellation method (fire assay) (ISO 11426:2021)
Document Center Inc. is an authorized dealer of SIS standards.
The following bibliographic material is provided to assist you with your purchasing decision:
The following bibliographic material is provided to assist you with your purchasing decision:
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.
To find similar documents by classification:
This document comes with our free Notification Service, good for the life of the document.
This document is available in either Paper or PDF format.
Designation Name
SS-EN ISO 11426:2021
Revision Level
2021 EDITION
Status
Current
Publication Date
April 1, 2021
Language(s)
English
Page Count
20
International Equivalent
EN ISO 11426:2021(IDT); ISO 11426:2021(IDT)