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Normas DIN – AENOR
DIN EN ISO 11426:2020-09

DIN EN ISO 11426:2020-09

Jewellery and precious metals - Determination of gold - Cupellation method (fire assay) (ISO/DIS 11426:2020); German and English version prEN ISO 11426:2020 / Note: Date of issue 2020-07-31*Intended as replacement for DIN EN ISO 11426 (2016-12).

Joaillerie, bijouterie et métaux précieux - Dosage de l'or - Méthode de coupellation (essai au feu) (ISO/DIS 11426:2020); Version allemande et anglaise prEN ISO 11426:2020 / Attention: Date de parution 2020-07-31*Prévu pour remplacer DIN EN ISO 11426 (2016-12).

Schmuck und Edelmetalle - Bestimmung von Gold - Dokimastisches Verfahren (ISO/DIS 11426:2020); Deutsche und Englische Fassung prEN ISO 11426:2020 / Achtung: Erscheinungsdatum 2020-07-31*Vorgesehen als Ersatz für DIN EN ISO 11426 (2016-12).

2020-09 /Active
Equivalencias internacionales:

ISO/DIS 11426 (2020-08)

prEN ISO 11426 (2020-08)

The document specifies a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. Preferably the gold content of the alloys lies between 333 and 999 parts per thousand gold. The procedure applies specifically to gold alloys incorporating silver, copper and zinc. Some modifications are indicated where nickel and/or palladium are present in the socalled white gold alloys, as well for alloys containing 990 or more parts per thousand of gold.
Alloys, Assay, Chemical analysis and testing, Definitions, Determination of content, Determination procedures, Fineness, Fire tests, Gold, Gold alloys, Jewellery, Noble metals, Purity, Sampling methods
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