NF EN 31426

NF EN 31426

September 1994
Standard Cancelled

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

Le présent document prescrit une méthode de coupellation (essai au feu) permettant de doser l'or dans les alliages d'or pouvant contenir de l'argent, du cuivre et du zinc, utilisés pour la bijouterie-joaillerie.

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Main informations

Collections

National standards and national normative documents

Publication date

September 1994

Number of pages

9 p.

Reference

NF EN 31426

ICS Codes

39.060   Jewellery

Classification index

A06-201

Print number

1 - 01/09/1994

International kinship

ISO 11426:1993

European kinship

EN 31426:1994
Sumary
Determination of gold in jewellery alloys. Cupellation method (fire assay).

Le présent document prescrit une méthode de coupellation (essai au feu) permettant de doser l'or dans les alliages d'or pouvant contenir de l'argent, du cuivre et du zinc, utilisés pour la bijouterie-joaillerie.
Standard replaced by (1)
NF EN ISO 11426
February 1999
Standard Cancelled
Determination of gold in gold jewellery alloys - Cupellation method (fire assay)

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