ISO 11427:1993 Historical

714871

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

standard by International Organization for Standardization , 05/01/1993

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Full Description

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.

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Document History

  1. ISO 11427:2024


    Jewellery and precious metals - Determination of silver - Potentiometry using potassium bromide

    • Most Recent

  2. ISO 11427:2014


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

    • Historical Version

  3. ISO 11427/Cor1:1994


    Corrigendum

    • Historical Version

  4. ISO 11427:1993

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

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. ISO 11427/Cor1:1994

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    Corrigendum

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Product Details

Published:

05/01/1993

Number of Pages:

3

Same As:

BS EN 31427:1994