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International ISO standards

Publication date

April 2024

Number of pages

5 p.

Reference

ISO 11427:2024

ICS Codes

39.060 Jewellery

Print number

1

Sumary

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.

Replaced standards (1)

ISO 11427:2014

November 2014

International 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)

ISO 11427:2014

November 2014

International 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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