EN ISO 21660-3:2021

SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN 15414-3:2011
Trdna alternativna goriva - Določevanje vlage z metodo sušenja v sušilni komori -
3. del: Vlaga v preskusnem vzorcu (ISO 21660-3:2021)
Solid recovered fuels - Determination of moisture content using the oven dry method -
Part 3: Moisture in general analysis sample (ISO 21660-3:2021)
Feste Sekundärbrennstoffe - Bestimmung des Wassergehaltes unter Verwendung des
Verfahrens der Ofentrocknung - Teil 3: Wassergehalt in gewöhnlichen Analysenproben
(ISO 21660-3:2021)
Combustibles solides de récupération - Détermination de l'humidité par la méthode de
séchage à l'étuve - Partie 3: Humidité de l'échantillon pour analyse générale (ISO 21660-
3:2021)
Ta slovenski standard je istoveten z: EN ISO 21660-3:2021
ICS:
75.160.10 Trda goriva Solid fuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 21660-3
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2021
EUROPÄISCHE NORM
ICS 75.160.10 Supersedes EN 15414-3:2011
English Version
Solid recovered fuels - Determination of moisture content
using the oven dry method - Part 3: Moisture in general
analysis sample (ISO 21660-3:2021)
Combustibles solides de récupération - Détermination Feste Sekundärbrennstoffe - Bestimmung des
de l'humidité par la méthode de séchage à l'étuve - Wassergehaltes unter Verwendung des Verfahrens der
Partie 3: Humidité de l'échantillon pour analyse Ofentrocknung - Teil 3: Wassergehalt in gewöhnlichen
générale (ISO 21660-3:2021) Analysenproben (ISO 21660-3:2021)
This European Standard was approved by CEN on 6 March 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 21660-3:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 21660-3:2021) has been prepared by Technical Committee ISO/TC 300 "Solid
recovered materials, including solid recovered fuels" in collaboration with Technical Committee
CEN/TC 343 “Solid Recovered Fuels” the secretariat of which is held by SFS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2021, and conflicting national standards
shall be withdrawn at the latest by September 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 15414-3:2011.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 21660-3:2021 has been approved by CEN as EN ISO 21660-3:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 21660-3
First edition
2021-03
Solid recovered fuels — Determination
of moisture content using the oven dry
method —
Part 3:
Moisture in general analysis sample
Combustibles solides de récupération — Détermination de l'humidité
par la méthode de séchage à l'étuve —
Partie 3: Humidité de l'échantillon pour analyse générale
Reference number
ISO 21660-3:2021(E)
©
ISO 2021
ISO 21660-3:2021(E)
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 21660-3:2021(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 2
6 Sample preparation . 2
7 Procedure. 2
8 Calculation . 3
9 Precision . 3
9.1 Repeatability . 3
9.2 Reproducibility . 3
10 Test report . 3
Annex A (informative) Interlaboratory test results . 5
Annex B (informative) Environmental aspects . 8
Bibliography .10
ISO 21660-3:2021(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).
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 (see 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.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 300, Solid recovered fuels, in collaboration
with the European Committee for Standardization (CEN) Technical Committee CEN/TC 343, Solid
recovered fuels, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 21660-3:2021(E)
Solid recovered fuels — Determination of moisture content
using the oven dry method —
Part 3:
Moisture in general analysis sample
1 Scope
This document specifies a method for the determination of moisture in a general analysis sample by
drying the sample in an oven. This method is suitable for use for general analysis samples in accordance
[3]1)
with CEN/TS 15414-1 . It is applicable to all solid recovered fuels.
If solid recovered fuels contain large amounts of oil-fractions the Karl-Fischer-Method (for example
ISO 760) is advisable. Otherwise, a lower temperature is recommended (e.g. 50 °C ± 10 °C) and a longer
drying time until constant mass is achieved.
NOTE The term moisture content, when used with recovered materials, can be misleading since solid
recovered materials, e. g. biomass, frequently contain varying amounts of volatile compounds (extractives)
which can evaporate when determining the moisture content of the general analyses sample by oven drying.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 21637, Solid recovered fuels — Vocabulary
2)
ISO 21646 , Solid recovered fuels — Sample preparation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 21637 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Principle
The analysis sample of solid recovered fuels is dried at a temperature of 105 °C under air atmosphere
or nitrogen atmosphere. The percentage of moisture is calculated from the loss in mass of the test
sample. If the sample material is susceptible to oxidation (at 105 °C), drying in nitrogen atmosphere is
performed.
1)  The adoption of the standard series EN 15414 as standard series ISO 21660 is planned. I
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