EN ISO 11427:2016
Withdrawn
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide (ISO 11427:2014)
10-12-2016
04-30-2017
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Calculation and expression of results
9 Test report
Bibliography
The method of ISO 11427:2014 describes a volumetric method for the determination of silver in jewellery alloys, preferably within the range of fineness stated in ISO 9202.These alloys may contain copper, zinc, cadmium, and palladium. Apart from palladium, which must be precipitated before commencing titration, these elements do not interfere with this method of determination.This method is intended to be used as the referee method for the determination of fineness in alloys covered by ISO 9202.
| Committee |
CEN/BT
|
| DevelopmentNote |
Supersedes EN 31427. (10/2016)
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NEN EN ISO 11427 : 2016 | Identical |
| NS EN ISO 11427 : 2016 | Identical |
| SS-EN ISO 11427 : 2016 | Identical |
| DIN EN ISO 11427 E : 2016 | Identical |
| DIN EN ISO 11427:2016-12 | Identical |
| PN EN ISO 11427 : 2016 | Identical |
| ISO 11427:2014 | Identical |
| I.S. EN ISO 11427:2016 | Identical |
| BS EN ISO 11427:2016 | Identical |
| NF EN ISO 11427 : 2017 | Identical |
| DS EN ISO 11427 : 2016 | Identical |
| UNE-EN ISO 11427:2017 | Identical |
| ISO 9202:2014 | Jewellery — Fineness of precious metal alloys |
| ISO 11596:2008 | Jewellery — Sampling of precious metal alloys for and in jewellery and associated products |