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https://www.metrohm.com/en/applications/AN-T-191
Determination of the silver in silver jewelry alloys according to EN ISO 11427 and GB/T 17832. The knowledge of the exact silver content of silver allows used for jewelry is very important to ensure the quality of jewelry. Therefore, the determination procedure is regulated internationally and nationally.
https://www.iso.org/standard/57653.html
Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using sodium chloride or potassium chloride This standard was last reviewed and confirmed in 2020. Therefore this version remains current.Category: p
https://webstore.ansi.org/standards/iso/iso114271993
ISO 11427:1993 Determination of silver in silver jewellery alloys -- Volumetric (potentiometric) method using potassium bromide. 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.
https://www.iso.org/standard/57648.html
Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using potassium bromide This standard was last reviewed and confirmed in 2020. Therefore this version remains current.Category: p
https://www.iso.org/obp/ui/#!iso:std:19367:en
International Standard ISO 11427 was prepared by Technical Committee ISO/TC 174, Jewellery. 1 Scope This International Standard specifies a volumetric method for the determination of silver in silver jewellery alloys, preferably within the range of fineness stated in ISO 9202 .
https://www.iso.org/obp/ui/#!iso:std:57648:en
This International Standard method 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.
https://www.amazon.com/ISO-11427-Determination-Volumetric-potentiometric/dp/B000Y2U6P8
Aug 23, 2007 · ISO 11427:1993, Determination of silver in silver jewellery alloys -- Volumetric (potentiometric) method using potassium bromide [ISO TC 174/WG 1] on Amazon.com. *FREE* shipping on qualifying offers. ISO 11427:1993, Determination of silver in silver jewellery alloys -- Volumetric (potentiometric) method using potassium bromideAuthor: ISO TC 174/WG 1
https://standards.globalspec.com/std/9894369/ISO%2013756
Jewellery - Determination of silver in silver jewellery alloys - Volumetric (potentiometric) method using sodium chloride or potassium chloride This International Standard specifies a volumetric method for the determination of silver in silver jewellery alloys, preferably within the range of fineness stated in ISO 9202.
https://www.eptis.bam.de/eptis/WebSearch/view/444411
The Institute of Metrology of Bosnia and Herzegovina, Chemistry Department organizes the Proficiency Testing Scheme on precious metals alloys. Test samples are gold (mass fraction of gold in the range of 333‰-999‰) and silver (mass fraction of silver in the range of 800‰-999‰) jewelry alloys.
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