ISO 11427:1993

Name: ISO 11427:1993
Brand: ISO
SKU: ISO 11427:1993
Price: 76.23 EUR
Availability: InStock
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Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using potassium bromide

Publication date: May 6, 1993

95.99 Withdrawal of Standard Oct 29, 2014

General information

Current stage: 95.99 Withdrawal of Standard Oct 29, 2014

Originator: ISO

Owner: ISO/TC 174 Jewellery and precious metals

Type: International Standard

ICS: 39.060 Jewellery

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Status: Withdrawn

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Languages: French English

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Scope

The principle of the method specified is dissolving the sample in dilute nitric acid and determining the silver content of the resulting solution by titration with standard potassium bromide solution, using a potentiometric indication of the equivalence point. The alloys, preferably within the range of fineness stated in ISO 9202, 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.

Life cycle

NOW

WITHDRAWN
ISO 11427:1993
95.99 Withdrawal of Standard
Oct 29, 2014

CORRIGENDA / AMENDMENTS

WITHDRAWN
ISO 11427:1993/Cor 1:1994

REVISED BY

WITHDRAWN
ISO 11427:2014