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prEN ISO 11427 Edition 04/2024
Jewellery and precious metals - Determination of silver in silver alloys - Potentiometry using potassium bromide (ISO/DIS 11427:2023)
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Abstract

This document specifies a volumetric method for the determination of silver on a material considered homogeneous. The silver content of the sample lies preferably between (100 and 999,0) parts per thousand (‰) by mass. Fineness above 999,0 ‰ can be determined using a spectroscopy method by difference (e.g. ISO 15096). This method is intended to be used as the reference method for the determination of fineness in alloys covered by ISO 9202.

Status

Draft - Active

Origin

Technical Committee :
CEN/TC 410 : Project Committee - Consumer confidence and nomenclature in the diamond industry

Implementation

start of the vote on the project    16/03/2023   date of ratification (dor)    07/07/2023
end of the vote on the project    06/06/2023   date of anouncement (doa)    17/07/2024
start of the vote on the final project    14/05/2024   date of publication (dop)    17/10/2024
end of the vote on the final project    09/07/2024   date of withdrawal (dow)    17/10/2024


Publication Official Journal
of the Grand-Duchy of Luxembourg
Reference

Relations

Relations to older standards
ILNAS-EN ISO 11427:2016

Relations to international standards
ISO 11427 

International Classification for Standards (ICS codes) :

39.060 : Jewellery

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