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ILNAS-EN ISO 11427:2016 Edition 10/2016
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide (ISO 11427:2014)
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Abstract

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.

Status

Standard - Superseded

Origin

Technical Committee :
CEN/SS M21 : Precious metals - Applications in jewellery and associated products

Implementation

start of the vote on the project    21/04/2016   date of ratification (dor)    26/08/2016
end of the vote on the project    21/07/2016   date of anouncement (doa)    31/01/2017
start of the vote on the final project    07/07/2017   date of publication (dop)    30/04/2017
end of the vote on the final project    01/09/2017   date of withdrawal (dow)    30/04/2017


Publication Official Journal
of the Grand-Duchy of Luxembourg
18/11/2016
Reference Mémorial A N° 230

Relations

Evolutions
ILNAS-EN ISO 11427:2024

Relations to older standards
ILNAS-EN 31427:1994/AC:1994
ILNAS-EN 31427:1994

International Classification for Standards (ICS codes) :

39.060 : Jewellery

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