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ISO 11427:1993

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

Pages: 3
Publication date: 1993-05-01
Price: Contact

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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.
Document identifier
ISO 11427:1993
Title
Determination of silver in silver jewellery alloys -- Volumetric (potentiometric) method using potassium bromide
ISO Category
TC 174/WG 1: Methods for determining fineness
Publication date
1993-05-01
Status
Ineffective
International Relationship
BS EN 31427:1994
Cross references
Latest version
ISO 11427:2014
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide
Document identifier ISO 11427:2014
Publication date 2014-11-01
Classification 39.060. Jewellery
Status Effective
*
History of version
ISO 11427:2014*ISO 11427:1993 * ISO 11427:2014 * ISO 11427/Cor1:1994 * ISO 11427:1993
Keywords
Classification
39.060. Jewellery
Pages
3
Price Contact

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