Fertilizers -- Extraction of water soluble phosphorus

This document specifies a method for the extraction of water soluble phosphorus. The method is applicable to all fertilizers, including compound fertilizers, where water soluble phosphorus is to be determined.

Engrais -- Extraction du phosphore soluble dans l'eau

General Information

Status
Published
Publication Date
10-Oct-2019
Current Stage
6060 - International Standard published
Start Date
05-Sep-2019
Completion Date
11-Oct-2019
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ISO 15958:2019 - Fertilizers -- Extraction of water soluble phosphorus
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INTERNATIONAL ISO
STANDARD 15958
First edition
2019-10
Fertilizers — Extraction of water
soluble phosphorus
Engrais — Extraction du phosphore soluble dans l'eau
Reference number
ISO 15958:2019(E)
ISO 2019
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ISO 15958:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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ISO 15958:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Sampling ........................................................................................................................................................................................................................ 1

6 Reagents ........................................................................................................................................................................................................................ 1

7 Apparatus ..................................................................................................................................................................................................................... 2

8 Procedure..................................................................................................................................................................................................................... 2

8.1 Test portion ................................................................................................................................................................................................ 2

8.2 Extraction .................................................................................................................................................................................................... 2

9 Test report ................................................................................................................................................................................................................... 2

Bibliography ................................................................................................................................................................................................................................ 3

© ISO 2019 – All rights reserved iii
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ISO 15958:2019(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

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