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NF EN 31426 : 1994

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

DOSAGE DE L'OR DANS LES ALLIAGES D'OR POUR LA BIJOUTERIE-JOAILLERIE - METHODE DE COUPELLATION (ESSAI AU FEU)

Superseded date

02-01-1999

Published date

01-12-2013

Cooperating organizations
National foreword
Foreword
1. Scope
2. Normative reference
3. Principle
4. Reagents
5. Apparatus
6. Sampling
7. Procedure
8. Expression of results
9. Notes on procedure
10. Test report
Annex
ZA. (normative) Normative references to international
     publications with their relevant European
     publications
National annexes
NA. (informative) Committees responsible
NB. (informative) Cross-references

Specifies a cuppellation method (fire assay) for the determination of gold in gold jewellery alloys. Applies specifically to gold alloys incorporating silver, copper and zinc. Coverage includes reagents, procedure, and notes on procedure.

DevelopmentNote
INDICE DE CLASSEMENT: A06201
DocumentType
Standard
PublisherName
Association Francaise de Normalisation
Status
Superseded

Standards Relationship
BS EN 31426:1994 Identical
UNE-EN 31426:1996 Identical
I.S. EN 31426:1994 Identical
EN 31426 : 1994 Identical
DIN EN 31426:1994-09 Identical

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