ISO 11722:2013

Solid mineral fuels -- Hard coal -- Determination of moisture in the general analysis test sample by drying in nitrogen

ISO 11722:2013 specifies a method for determining the moisture in the general analysis test sample of hard coal by drying in nitrogen.

Combustibles minéraux solides -- Houille -- Détermination de l'humidité de l'échantillon pour analyse par dessiccation en atmosphère d'azote

General Information

• Status: Published
• Publication Date: 14-Jul-2013
• ICS: 73.040 - Coals
• Technical Committee: ISO/TC 27/SC 5 - Methods of analysis
• Drafting Committee: ISO/TC 27/SC 5/WG 1 - Moisture, volatile matter and ash
• Current Stage: 6060 - International Standard published
• Start Date: 30-May-2013
• Completion Date: 15-Jul-2013

RELATIONS

• Revised: ISO 11722:1999 - Solid mineral fuels -- Hard coal -- Determination of moisture in the general analysis test sample by drying in nitrogen
• Effective Date: 10-Aug-2012

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 11722
Second edition
2013-07-01
Solid mineral fuels — Hard coal —
Determination of moisture in the
general analysis test sample by
drying in nitrogen
Combustibles minéraux solides — Houille — Détermination
de l’humidité de l’échantillon pour analyse par dessiccation en
atmosphère d’azote
Reference number
ISO 11722:2013(E)
ISO 2013
---------------------- Page: 1 ----------------------
ISO 11722:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013

All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 11722:2013(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

2 Normatives references ................................................................................................................................................................................... 1

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

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

5 Reagent ........................................................................................................................................................................................................................... 1

6 Apparatus ..................................................................................................................................................................................................................... 1

7 Preparation of the test sample ............................................................................................................................................................... 2

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

9 Expression of results ........................................................................................................................................................................................ 2

10 Precision ....................................................................................................................................................................................................................... 2

10.1 Repeatability limit ................................................................................................................................................................................ 2

10.2 Reproducibility limit .......................................................................................................................................................................... 2

11 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Example of a suitable oven ................................................................................................................................ 4

© ISO 2013 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 11722:2013(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. www.iso.org/directives

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received. www.iso.org/patents

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

The committee responsible for this document is ISO/TC 27, Solid mineral fuels, Subcommittee SC 5,

Methods of analysis.

This second edition cancels and replaces the first edition (ISO 11722:1999), of which it constitutes a

minor revision.
iv © ISO 2013 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 11722:2013(E)
Introduction

The determination of the moisture in the general analysis test sample is required to correct the results

of certain analytical determinations, e.g. volatile matter and hydrogen, for the effect of water in the

determinatio
...