ISO/PRF 11427

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

Titre manque

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: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Completion Date: 09-Feb-2024

Relations

• Consolidates: ISO 23226:2020 - Corrosion of metals and alloys — Guidelines for the corrosion testing of metals and alloys exposed in deep-sea water
• Effective Date: 06-Jun-2022
• Revises: ISO 11427:2014 - Jewellery — Determination of silver in silver jewellery alloys — Volumetric (potentiometric) method using potassium bromide
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 11427
Third edition
Jewellery and precious metals —
Determination of silver —
Potentiometry using potassium
bromide
PROOF/ÉPREUVE
Reference number
ISO 11427:2024(en) © ISO 2024

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ISO 11427:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
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, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
© ISO 2024 – All rights reserved
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ISO 11427:2024(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 potassium bromide solution factor .2
8.1.1 General .2
8.1.2 Preparation of silver standards .2
8.1.3 Titration of the standard silver solution .2
8.1.4 Calculation of the potassium bromide 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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ISO/PRF 11427:2024(en)
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ISO /TC 174/WG 1
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Secretariat: DIN
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Date: 2024-01-25xx
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Jewellery and precious metals — Determination of silver —
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Potentiometry using potassium bromide .
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Joaillerie, bijouterie et métaux précieux— Dosage de l’argent —Potentiométrie utilisant le bromure de
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potassium
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PROOF

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ISO/PRF 11427:2024(en)
Formatted: Font: 11 pt, Bold
Formatted: Font: 11 pt, Bold
Formatted: HeaderCentered, Left, Space After: 0 pt,
© ISO 2024
Line spacing: single
Formatted: Right: 1.5 cm, Bottom: 1 cm, Gutter: 0 cm,
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
Header distance from edge: 1.27 cm, Footer distance
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
from edge: 0.5 cm
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. Commented [eXtyles1]: The reference "ISO 2024" is to a
withdrawn standard
ISO copyright office
Formatted: Default Paragraph Font
CP 401 • Ch. de Blandonnet 8
Formatted: Default Paragraph Font
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: Indent: Left: 0 cm, Right: 0 cm, Space
EmailE-mail: [e-mail]
Before: 0 pt, No page break before, Adjust space
Website: www.iso.orgwww.iso.org
between Latin and Asian text, Adjust space between
Asian text and numbers
Published in Switzerland
Formatted: French (France)
Formatted: French (France)
Formatted: French (France)
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: Font: 10 pt
Formatted: FooterCentered, Left, Line spacing: single
Formatted: Font: 11 pt
Formatted: FooterPageRomanNumber, Left
© ISO 2024 – All rights reserved

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ISO/PRF 11427:2024(en)
Formatted: Font: Bold
Formatted: HeaderCentered
Formatted: Adjust space between Latin and Asian text,
Contents
Adjust space between Asian text and numbers, Tab
stops: Not at 13.42 cm
Foreword . vi
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 .
...