NF EN ISO 11427

NF EN ISO 11427

January 2017
Standard Cancelled

Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide

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.

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National standards and national normative documents

Publication date

January 2017

Number of pages

15 p.

Reference

NF EN ISO 11427

ICS Codes

39.060   Jewellery

Classification index

A06-202

Print number

1

International kinship

ISO 11427:2014

European kinship

EN ISO 11427:2016
Sumary
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide

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.

Replaced standards (2)
NF EN 31427
June 1995
Standard Cancelled
Determination of silver in silver jewellery alloys. Volumetric (potentiometric) method using potassium bromide.

NF ISO 11427
February 2015
Standard Cancelled
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide

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.

Standard replaced by (1)
NF EN ISO 11427
April 2024
Standard Current
Jewellery and precious metals - Determination of silver - Potentiometry using potassium bromide

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.

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