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Standard
ISO 13756
Third edition
Jewellery and precious metals —
2024-04
Determination of silver —
Potentiometry using sodium
chloride or potassium chloride
Joaillerie, bijouterie et métaux précieux — Dosage de l'argent —
Méthode potentiométrique utilisant le chlorure de sodium ou le
chlorure de potassium
Reference number
ISO 13756:2024(en) © ISO 2024
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ISO 13756:2024(en)
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 13756:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling . 2
8 Procedure . 2
8.1 Determination of sodium chloride or potassium chloride standard solution factor .2
8.1.1 General .2
8.1.2 Preparation of silver standards .2
8.1.3 Titration of standard silver solution .2
8.1.4 Calculation of sodium chloride or potassium chloride standard solution factor .3
8.2 Determination .3
8.2.1 Preparation of the sample solution .3
8.2.2 Elimination of palladium .3
8.2.3 Titration of the sample solution .3
9 Calculation and expression of results .
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