SIST EN ISO 17829:2025
(Main)Solid biofuels - Determination of length and diameter of pellets (ISO 17829:2025)
Solid biofuels - Determination of length and diameter of pellets (ISO 17829:2025)
This document specifies the methods for determination of the diameter and length of pellets. Concerning the pellet length, methods for the determination of fractions of specified lengths, such as pellets > 40 mm and particles < 10 mm and for determination of the average length are included.
Biogene Festbrennstoffe - Bestimmung der Länge und des Durchmessers von Pellets (ISO 17829:2025)
In diesem Dokument werden die Verfahren für die Bestimmung des Durchmessers und der Länge von Pellets festgelegt. Hinsichtlich der Pelletlänge sind Verfahren zur Bestimmung von Fraktionen festgelegter Längen, z. B. Pellets > 40 mm und Partikel < 10 mm sowie zur Bestimmung der durchschnittlichen Länge enthalten.
Biocombustibles solides - Détermination de la longueur et du diamètre des granulés (ISO 17829:2025)
Le présent document spécifie les méthodes permettant de déterminer le diamètre et la longueur des granulés. Pour ce qui concerne la longueur des granulés, des méthodes de détermination des fractions de longueurs spécifiées (telles que les granulés > 40 mm et les particules < 10 mm) et de détermination de la longueur moyenne sont incluses.
Trdna biogoriva - Določanje dolžine in premera peletov (ISO 17829:2025)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2025
Nadomešča:
SIST EN ISO 17829:2016
Trdna biogoriva - Določanje dolžine in premera peletov (ISO 17829:2025)
Solid biofuels - Determination of length and diameter of pellets (ISO 17829:2025)
Biogene Festbrennstoffe - Bestimmung der Länge und des Durchmessers von Pellets
(ISO 17829:2025)
Biocombustibles solides - Détermination de la longueur et du diamètre des granulés
(ISO 17829:2025)
Ta slovenski standard je istoveten z: EN ISO 17829:2025
ICS:
75.160.40 Biogoriva Biofuels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17829
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2025
EUROPÄISCHE NORM
ICS 27.190; 75.160.40 Supersedes EN ISO 17829:2015
English Version
Solid biofuels - Determination of length and diameter of
pellets (ISO 17829:2025)
Biocombustibles solides - Détermination de la Biogene Festbrennstoffe - Bestimmung der Länge und
longueur et du diamètre des granulés (ISO des Durchmessers von Pellets (ISO 17829:2025)
17829:2025)
This European Standard was approved by CEN on 12 September 2025.
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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17829:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17829:2025) has been prepared by Technical Committee ISO/TC 238 "Solid
Biofuels and Pyrogenic Biocarbon" in collaboration with Technical Committee CEN/TC 335 “Solid
Biofuels and Pyrogenic Biocarbon” the secretariat of which is held by SIS.
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 March 2026, and conflicting national standards shall
be withdrawn at the latest by March 2026.
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 ISO 17829:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 17829:2025 has been approved by CEN as EN ISO 17829:2025 without any modification.
International
Standard
ISO 17829
Second edition
Solid biofuels — Determination of
2025-09
length and diameter of pellets
Biocombustibles solides — Détermination de la longueur et du
diamètre des granulés
Reference number
ISO 17829:2025(en) © ISO 2025
ISO 17829:2025(en)
© ISO 2025
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
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Published in Switzerland
ii
ISO 17829:2025(en)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Sample preparation . 4
6.1 General .4
6.2 Preparation requirements for pellet diameter .4
6.3 Preparation requirements for pellet length and pellet length fractions .4
7 Procedure . 4
7.1 Determination of the parameters to be analysed .4
7.2 Determination of the pellet diameter class .5
7.3 Measuring the length of an individual pellet .5
7.3.1 General .5
7.3.2 Option A: Measuring the length of an individual pellet with a measuring block
(5.2) .5
7.3.3 Option B: Measuring the length of an individual pellet with a calliper.6
7.4 Determination of the number of pellets above a maximum length .6
7.5 Determination of the share of pellets > 40 mm and the length of the longest pellet.6
7.6 Determination of the share of pellets of any other specified length, including pellets
< 10 mm .7
7.7 Determination of the average length of pellets .7
8 Calculations . 7
8.1 Pellet diameter class .7
8.2 Share of a specified fraction of pellets .7
8.2.1 General .7
8.2.2 Share of fractions including coarse pellet fines .8
8.2.3 Share of pellets > 40 mm .8
8.3 Average pellet length .9
9 Performance characteristics . 9
10 Test report . 9
Annex A (informative) Devices for the determination of the length of pellets with a diameter of
8 mm or above . .11
Annex B (informative) Comparative studies for determination of the pellet length .13
Annex C (informative) Example of a construction plan for a measuring block .15
Bibliography .18
iii
ISO 17829:2025(en)
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
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has been established has the right to be represented on that committee. International organizations,
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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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest infor
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