<p>ISO 11426:2014 specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The gold content of the alloys should preferably lie between 333 and 999 parts per thousand (?).</p>
<p>The procedure is applicable specifically to gold alloys incorporating silver, copper, and zinc. Some modifications are indicated where nickel and/or palladium are present in the so-called white gold alloys, as well as for alloys containing 990 or more parts per thousand (?) of gold.</p>
<p>ISO 11426:2014 is intended to be used as the recommended method for the determination of fineness in alloys covered by ISO 9202.</p>
Registration number (WIID)
57647
Scope
<p>ISO 11426:2014 specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. The gold content of the alloys should preferably lie between 333 and 999 parts per thousand (?).</p>
<p>The procedure is applicable specifically to gold alloys incorporating silver, copper, and zinc. Some modifications are indicated where nickel and/or palladium are present in the so-called white gold alloys, as well as for alloys containing 990 or more parts per thousand (?) of gold.</p>
<p>ISO 11426:2014 is intended to be used as the recommended method for the determination of fineness in alloys covered by ISO 9202.</p>
