I.S. EN 31426:1994
Superseded
View Superseded by
DETERMINATION OF GOLD IN GOLD JEWELLERY ALLOYS - CUPELLATION METHOD (FIRE ASSAY)
01-12-2013
05-21-1999
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Superseded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 |
| BS EN 31426:1994 | Identical |
| NF EN 31426 : 1994 | Identical |
| EN 31426 : 1994 | Identical |
| NBN EN 31426 : 1994 | Identical |
| UNE-EN 31426:1996 | Identical |
| DIN EN 31426:1994-09 | Identical |