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ISO 11426:2014

Jewellery — Determination of gold in gold jewellery alloys — Cupellation method (fire assay)

95.99 Withdrawal of Standard   Mar 11, 2021

General information

95.99     Mar 11, 2021

ISO

ISO/TC 174

International Standard

39.060  

Scope

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 (?).
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.
ISO 11426:2014 is intended to be used as the recommended method for the determination of fineness in alloys covered by ISO 9202.

Life cycle

PREVIOUSLY

Revises
ISO 11426:1997

NOW

WITHDRAWN
ISO 11426:2014
95.99 Withdrawal of Standard
Mar 11, 2021

REVISED BY

PUBLISHED
ISO 11426:2021

National adoptions

Jewellery — Determination of gold in gold jewellery alloys — Cupellation method (fire assay)

95.99 Withdrawal of Standard

DPS/KT 133 more

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