NF EN ISO 11427

NF EN ISO 11427

January 2017
Standard Current

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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Collections

National standards and national normative documents

Publication date

January 2017

Number of pages

13 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

<p>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.</p> <p>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.</p> <p>This method is intended to be used as the referee method for the determination of fineness in alloys covered by ISO 9202.</p>

Standard replaced by (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

<p>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.</p> <p>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.</p> <p>This method is intended to be used as the referee method for the determination of fineness in alloys covered by ISO 9202.</p>

Table of contents
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  • 1 Domaine d'application
  • 2 Références normatives
  • 3 Principe
  • 4 Réactifs
  • 5 Appareillage
  • 6 Échantillonnage
  • 7 Mode opératoire
  • 8 Calcul et expression des résultats
  • 9 Rapport d'essai
  • Bibliographie
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