ISO 13756

Jewellery and precious metals — 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

General Information

• Status: Not Published
• ICS: 39.060 - Jewellery
• Technical Committee: ISO/TC 174 - Jewellery and precious metals
• Drafting Committee: ISO/TC 174 - Jewellery and precious metals
• Current Stage: 6000 - International Standard under publication
• Completion Date: 11-Mar-2024

Relations

• Revises: ISO 13756:2015 - Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using sodium chloride or potassium chloride
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 13756
Third edition
Jewellery and precious metals —
Determination of silver —
Potentiometry using sodium
chloride or potassium chloride
PROOF/ÉPREUVE
Reference number
ISO 13756:2024(en) © ISO 2024

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ISO 13756:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
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be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Published in Switzerland
PROOF/ÉPREUVE
© ISO 2024 – All rights reserved
ii

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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 . 3
9.1 Calculation .
...

Style Definition
ISO/PRF 13756:2024(en)
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Formatted: zzCover large
ISO /TC 174/WG 1
Formatted
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Secretariat: DIN
Date: 2024-01-25xx
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Formatted: Cover Title_A1
Jewellery and precious metals — Determination of silver —
Potentiometry using sodium chloride or potassium chloride
Joaillerie, bijouterie etmetaux precieux — Dosage de l’argent — Potentiométrie utilisant le chlorure de
sodium ou le chlorure de potassium

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PROOF

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ISO/PRF 13756:2024(en)
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Formatted: Right: 42.55 pt, Bottom: 28.35 pt, Gutter:
© ISO 2024
0 pt, Header distance from edge: 36 pt, Footer
distance from edge: 14.15 pt
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
Commented [eXtyles1]: The reference "ISO 2024" is to a
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
withdrawn standard
at the address below or ISO’s member body in the country of the requester.
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Before: 0 pt, No page break before, Adjust space
ISO copyright office
between Latin and Asian text, Adjust space between
CP 401 • Ch. de Blandonnet 8
Asian text and numbers
CH-1214 Vernier, Geneva
Formatted: Default Paragraph Font
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Formatted: Default Paragraph Font
Website: www.iso.orgwww.iso.org
Formatted: French (France)
Published in Switzerland
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© ISO 2024 – All rights reserved

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ISO/PRF 13756:2024(en)
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left, Space After: 0 pt,
Contents
Line spacing: single
Foreword . v
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 .
...