ISO 11427:1993
Determination of silver in silver jewellery alloys; volumetric (potentiometric) method using potassium bromide

Standard No.
ISO 11427:1993
Release Date
1993
Published By
International Organization for Standardization (ISO)
Status
Replace By
ISO 11427:1993/Cor 1:1994
Latest
ISO 11427:2024
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.

ISO 11427:1993 history

  • 2024 ISO 11427:2024 Jewellery and precious metals
  • 2014 ISO 11427:2014 Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide
  • 1994 ISO 11427:1993/Cor 1:1994 Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using potassium bromide; Technical Corrigendum 1
  • 1993 ISO 11427:1993 Determination of silver in silver jewellery alloys; volumetric (potentiometric) method using potassium bromide



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