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CEN
EN ISO 11426:2016

EN ISO 11426:2016

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Jewellery - Determination of gold in gold jewellery alloys - Cupellation method (fire assay) (ISO 11426:2014)

Superseded date

04-21-2021

Published date

10-12-2016

Publisher

Comite Europeen de Normalisation

European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Calculation and expression of results
9 Test report
Bibliography

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.

Committee
CEN/BT
DevelopmentNote
Supersedes EN 31426. (04/2007)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Superseded
SupersededBy
Supersedes

02/121776 DC : DRAFT APR 2002 PREN 14403 - SAMPLING OF THE PRECIOUS METAL ALLOYS IN JEWELLERY AND ASSOCIATED PRODUCTS
BS EN 1904:2000 Precious metals. The finenesses of solders used with precious metal jewellery alloys
EN 1904:2000 Precious metals - The finenesses of solders used with precious metal jewellery alloys

ISO 9202:2014 Jewellery Fineness of precious metal alloys
ISO 11596:2008 Jewellery Sampling of precious metal alloys for and in jewellery and associated products

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