CEN ISO/TR 29263:2021

Cereals and cereal products - Sampling studies (ISO/TR 29263:2021)

This document presents the description and the results of the three studies conducted by United Kingdom, France and Germany related to grain sampling in order to define a harmonized sampling protocol for official controls.
These results had been used to draft ISO 24333.

Getreide und Getreideerzeugnisse - Probenahmestudien (ISO/TR 29263:2021)

Céréales et produits céréaliers - Études sur l'échantillonnage (ISO/TR 29263:2021)

Le présent document détaille et expose les résultats des trois études sur l’échantillonnage des céréales menées par le Royaume-Uni, la France et l’Allemagne, dans le but de définir un protocole d’échantillonnage harmonisé pour les contrôles officiels.
Ces résultats ont été utilisés pour élaborer l’ISO 24333.

Žito in žitni proizvodi - Študije vzorčenja (ISO/TR 29263:2021)

General Information

• Status: Published
• Publication Date: 27-Jul-2021
• ICS: 67.060 - Cereals, pulses and derived products
• Technical Committee: CEN/TC 338 - Cereal and cereal products
• Drafting Committee: CEN/TC 338/WG 5 - Sampling
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 28-Jul-2021
• Due Date: 19-Jun-2021
• Completion Date: 28-Jul-2021
• Ref Project: SIST-TP CEN ISO/TR 29263:2021 - Cereals and cereal products - Sampling studies (ISO/TR 29263:2021)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2021
Žito in žitni proizvodi - Študije vzorčenja (ISO/TR 29263:2021)
Cereals and cereal products - Sampling studies (ISO/TR 29263:2021)
Getreide und Getreideerzeugnisse - Probenahmestudien (ISO/TR 29263:2021)
Céréales et produits céréaliers - Études sur l'échantillonnage (ISO/TR 29263:2021)
Ta slovenski standard je istoveten z: CEN ISO/TR 29263:2021
ICS:
67.060 Žita, stročnice in proizvodi iz Cereals, pulses and derived
njih products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

CEN ISO/TR 29263
TECHNICAL REPORT
RAPPORT TECHNIQUE
July 2021
TECHNISCHER BERICHT
ICS 67.060
English Version
Cereals and cereal products - Sampling studies (ISO/TR
29263:2021)
Céréales et produits céréaliers - Études sur Getreide und Getreideerzeugnisse -
l'échantillonnage (ISO/TR 29263:2021) Probenahmestudien (ISO/TR 29263:2021)

This Technical Report was approved by CEN on 21 June 2021. It has been drawn up by the Technical Committee CEN/TC 338.

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. CEN ISO/TR 29263:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (CEN ISO/TR 29263:2021) has been prepared by Technical Committee ISO/TC 34 "Food
products" in collaboration with Technical Committee CEN/TC 338 “Cereal and cereal products” the
secretariat of which is held by AFNOR.
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.
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 websites.
Endorsement notice
The text of ISO/TR 29263:2021 has been approved by CEN as CEN ISO/TR 29263:2021 without any
modification.
TECHNICAL ISO/TR
REPORT 29263
First edition
2021-07
Cereals and cereal products —
Sampling studies
Céréales et produits céréaliers — Études sur l'échantillonnage
Reference number
ISO/TR 29263:2021(E)
©
ISO 2021
ISO/TR 29263:2021(E)
© ISO 2021
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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Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO/TR 29263:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Context . 1
5 Study n°1: extract from "Grain sampling and assessment: sampling grain in lorries"
– Project report n° 339” . 1
5.1 General . 1
5.2 Context . 1
5.3 Studies conducted and objectives. 3
5.4 Methodology . 3
5.4.1 Conducting tests . 3
5.4.2 Results and conclusions . . . 5
6 Study n°2: extract from "Sampling grain in static and flowing condition –
alternatives to the regulatory protocol" .19
6.1 General .19
6.2 Context .20
6.2.1 Regulatory aspect .20
6.2.2 Normative aspect .20
6.3 Studies conducted and objectives.20
6.3.1 Study A .20
6.3.2 Study B .21
6.4 Study A: silos and lorries of wheat and corn – Fusariotoxins and quality assessment .21
6.4.1 Organising field tests .21
6.4.2 Results and conclusions . .33
6.5 Study B : silos of corn – Fusariotoxins; flowing grains .48
6.5.1 Organising field tests .48
6.5.2 Results and conclusions . .49
7 Study n°3: extract from "Investigation of the distribution of deoxynivalenol and
ochratoxin a contamination within a 26-T truckload of wheat kernels" – Project report .90
7.1 Context .91
7.2 Methodology .91
7.2.1 Instruments for sampling and sample homogenization process .91
7.2.2 Reagents and materials .91
7.2.3 Sampling procedure .92
7.2.4 Sample comminution .93
7.3 Results and Discussion .93
7.3.1 Distribution of DON and OTA infected kernels within the lot .93
7.3.2 Sample comminution study for the dry milling process.95
7.4 Uncertainty comparison on the basis of number of incremental samples .95
7.5 Conclusions .97
Bibliography .98
ISO/TR 29263:2021(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
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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).
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For an explanation on 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 the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 4,
Cereals and pulses, in collaboration with the European Committee for Standardization (CEN) Technical
Committee CEN/TC 338, Cereal and cereal products, 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

ISO/TR 29263:2021(E)
Introduction
This document presents the results of three groups of studies which results have been use
...