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I.S. 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Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

DETERMINATION OF GOLD IN GOLD JEWELLERY ALLOYS - CUPELLATION METHOD (FIRE ASSAY)

Superseded date

05-21-1999

Published date

01-12-2013

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

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

Describes a cupellation method (fire assay) for the determination of gold in gold jewellery alloys. Applies specifically to gold alloys incorporating silver, copper and zinc.

DocumentType
Standard
PublisherName
National Standards Authority of Ireland
Status
Superseded
SupersededBy

Standards Relationship
SN EN 31426 : 1994 Identical
BS EN 31426:1994 Identical
UNE-EN 31426:1996 Identical
NF EN 31426 : 1994 Identical
EN 31426 : 1994 Identical
UNI EN 31426 : 1997 Identical
NBN EN 31426 : 1994 Identical
DIN EN 31426:1994-09 Identical

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