oSIST prEN ISO 21294:2026

• Abstract:

  This document specifies the requirements for manual sampling of oilseeds by manual means or by automated mechanical means, for the purpose of assessing their quality and condition.; Note An exemple of "condition" is an odour due to a treatment product.; Stockpiles are excluded of the scope of this document.

• Status: Not Published
• Public Enquiry End Date: 29-Oct-2026
• ICS: 67.200.20 - Oilseeds
• Technical Committee: KŽP - Agricultural food products
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 14-Aug-2026
• Due Date: 01-Jan-2027
• Ref Project: prEN ISO 21294 - Oilseeds - Manual sampling of oilseeds (ISO/DIS 21294:2026)

• Revises: SIST EN ISO 21294:2017 - Oilseeds - Manual or automatic discontinuous sampling (ISO 21294:2017)
• Effective Date: 20-Nov-2024

oSIST prEN ISO 21294:2026 is the Slovenian draft adoption of ISO/DIS 21294:2026, issued by SIST for oilseeds. It specifies how to take manual samples of oilseeds, by manual means or by automated mechanical means, so the samples can be used to assess quality and condition. Stockpiles are outside its scope.

What does oSIST prEN ISO 21294:2026 specify?

oSIST prEN ISO 21294:2026 specifies manual sampling of oilseeds for quality and condition assessment. It covers sampling from moving product and from static lots, and it gives the rules for turning many increments into representative laboratory samples.

The document is organized into Clauses 1 to 11, followed by two informative annexes.

Annex	What it covers
Annex A	Steps for laboratory samples
Annex B	Instruments used to sample static products

The scope includes manual means and automated mechanical means, but not stockpiles. In practice, that means the standard is aimed at normal handling and transfer situations such as bags, bulk flow, wagons, lorries, barges, silos and warehouses.

What are the key requirements of oSIST prEN ISO 21294:2026?

oSIST prEN ISO 21294:2026 focuses on representative sampling. The main requirement is that the laboratory sample must reflect the lot as closely as possible, because analysis is only as reliable as the sampling step.

Lot structure and increments

Clause 4 and Table 1 divide a consignment into lots, with lot sizes from up to 500 t to up to 5 000 t depending on the consignment mass. Each lot needs a minimum number of increments, and each lot produces a laboratory sample. For a buyer, seller or inspector, this means the consignment has to be planned and sampled lot by lot, not as one undifferentiated mass.

Preferred sampling conditions

Clause 4 says sampling should be done when the oilseeds are flowing, where possible. Sampling should also be protected from contamination such as rain, dust, foreign material and mould growth, and it should be carried out quickly enough to avoid changes in the sample. If a step is delayed, increment samples are to be kept in airtight containers.

Equipment and cleanliness

Clause 5 requires sampling equipment to be clean, dry, free from foreign odours and made of materials that will not contaminate or change the oilseeds. The clause lists devices for bags, bulk and mixing or reduction. In practice, this means the sampler must match the product form and the container, and the tool must not become a source of error.

How increments are taken

Clause 7 requires increments to be taken from different parts of the lot and then combined. For bags, increments are taken from 2 % of the bags, with a minimum of five bags. For bulk in motion, increments are taken across the whole flow, perpendicular to the direction of flow, and at intervals that cover the full transfer period.

Special cases in bulk transfer

Clause 6 and Clause 7 give specific guidance for lorries, wagons, barges, silos and warehouses. The preferred method is sampling during loading or discharge. For wagons and lorries, the standard calls for sampling at several levels because layering can occur. For weigh hoppers, cylindrical samplers or shovels are used according to the site conditions.

Composite sample reduction

Clause 7 requires all increments for a lot to be blended into a composite sample before reduction. Mechanical homogenization is preferred, and the reduction can be done by coning and quartering or by dividers such as cone-shaped, rotary mechanical or riffle dividers. The practical point is to reduce sample size without introducing bias.

Packing, labelling and reporting

Clauses 9 to 11 require samples to be packed in suitable containers, sealed if moisture must be preserved, and protected from light for aflatoxin analysis only. Labels must carry identification data such as vehicle, origin, destination, lot size, date and place of sampling, and sampler identity. The sampling report must refer to this document and record the lot condition, including visible insect, mite or rodent infestation and any deviations from the method.

What terms does oSIST prEN ISO 21294:2026 define?

oSIST prEN ISO 21294:2026 defines the terms that control how samples are taken and combined.

• manual sampling - sampling by manual means or by automated mechanical means at one or more positions within a lot.
• consignment - the quantity of oilseeds dispatched or received at one time under one contract or shipping document.
• lot - the stated quantity of a consignment that can be sampled to determine quality and condition.
• increment sample - the quantity taken at one sampling point or time.
• composite sample - the representative bulk sample made by combining increment samples.
• homogenization - thorough blending so contaminants or foreign materials are evenly distributed.
• laboratory sample - a representative quantity obtained by unbiased reduction of a composite sample for analysis.

Who uses oSIST prEN ISO 21294:2026?

oSIST prEN ISO 21294:2026 is used by people who sample, move, receive, buy, sell or test oilseeds. That includes warehouse and silo operators, transport staff, inspectors, laboratory personnel, quality managers and commercial parties handling oilseed consignments.

In practice, they use it to collect representative samples during loading, unloading or storage entry and exit, to prepare laboratory samples for analysis, and to document the condition of the oilseeds when claims or disputes arise.

What changed in oSIST prEN ISO 21294:2026 from the previous edition?

oSIST prEN ISO 21294:2026 cancels and replaces ISO 21294:2017. The foreword says the main change is harmonisation of the terminology with ISO 21295.

Which standards are used with oSIST prEN ISO 21294:2026?

oSIST prEN ISO 21294:2026 names ISO 664, Oilseeds - Reduction of laboratory sample to test sample, as a normative reference. That standard provides the reduction step that turns a laboratory sample into a test sample.

ISO 21295 is also named in the revision note as the terminology basis for harmonisation, so it is relevant when comparing related oilseed sampling terms across the ISO series.

What does the oSIST prEN ISO 21294:2026 document contain?

oSIST prEN ISO 21294:2026 contains the full sampling workflow from consignment to laboratory sample. It includes Table 1 for lot size, minimum increment counts and laboratory sample counts, and Table 2 for composite and laboratory sample sizes by product type. It also includes Figure 1 for sampling points in wagons, Figure 2 for coning and quartering, Annex A for the sample preparation sequence, and Annex B with example instruments for static products.

The clauses cover principles, equipment, timing and place of sampling, the detailed method for taking increments, packing, labelling, dispatch and the sampling report. That makes the document useful both for field sampling and for documenting what was done later in the laboratory or in a commercial review.

SLOVENSKI STANDARD
01-oktober-2026
Oljnice - Ročno vzorčenje oljnic (ISO/DIS 21294:2026)
Oilseeds - Manual sampling of oilseeds (ISO/DIS 21294:2026)
Ölsaaten - Manuelle Probenahme von Ölsaaten (ISO/DIS 21294:2026)
Graines oléagineuses - Échantillonnage manuel des graines oléagineuses (ISO/DIS
21294:2026)
Ta slovenski standard je istoveten z: prEN ISO 21294
ICS:
67.200.20 Oljnice Oilseeds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 21294
ISO/TC 34/SC 2
Oilseeds — Manual sampling of
Secretariat: AFNOR
oilseeds
Voting begins on:
Graines oléagineuses – Echantillonnage manuel des graines
2026-08-07
oléagineuses
Voting terminates on:
ICS: 67.200.20 2026-10-30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
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BEING ACCEPTABLE FOR INDUSTRIAL,
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STANDARDS MAY ON OCCASION HAVE TO
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BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 21294:2026(en)
DRAFT
ISO/DIS 21294:2026(en)
International
Standard
ISO/DIS 21294
ISO/TC 34/SC 2
Oilseeds — Manual sampling of
Secretariat: AFNOR
oilseeds
Voting begins on:
Graines oléagineuses – Echantillonnage manuel des graines
2026-08-07
oléagineuses
Voting terminates on:
ICS: 67.200.20 2026-10-30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document has not been edited by the ISO Central Secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2026
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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BE CONSIDERED IN THE LIGHT OF THEIR
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NOTIFICATION OF ANY RELEVANT PATENT
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Published in Switzerland Reference number
ISO/DIS 21294:2026(en)
ii
ISO/DIS 21294:2026(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principles . 2
4.1 Representative samples .2
4.2 Oilseeds sampling .2
5 Equipment and devices . 3
6 Time and place of sampling and limitation of the size of lots . 3
6.1 General information.3
6.2 Bulk transfer .3
6.2.1 General .3
6.2.2 Transfer to lorries and wagons .3
6.2.3 Transfer to barges .3
6.2.4 Transfer to silos or warehouses .4
6.3 Lot size: number of laboratory samples .4
7 Method for taking samples . 5
7.1 General information.5
7.2 Number of increments .5
7.2.1 General requirements on taking increments .5
7.2.2 Products in bags .5
7.2.3 Bulk .5
7.2.4 Aggregation of the composite sample .6
7.2.5 Division of the composite sample .6
7.2.6 Sample dividers .7
8 Sample size per lot and for dispatch to the laboratory . 8
9 Packing and labelling of samples . 8
9.1 Packing of samples .8
9.2 Labelling of samples .8
10 Dispatch of samples . 9
11 Sampling report . 9
Annex A (informative) Steps for laboratory samples . 10
Annex B (informative) Instruments used to sample static products .12

iii
ISO/DIS 21294:2026(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
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).
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 information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 34, Food products, Subcommittee SC 2,
Oleaginous seeds and fruits and oilseed meals.
This second edition cancels and replaces the first edition (ISO 21294:2017), which has been technically
revised.
The main changes are as follows:
— Harmonisation of the terminology with ISO 21295.
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/DIS 21294:2026(en)
Introduction
Most oilseeds are marketed on the basis of the result of analysis of the samples representing lots, and
disputes are invariably settled by reference to these samples. Careless or inaccurate sampling practices
could lead to misunderstandings, delays and unwarranted financial adjustments.
Correct sampling is a difficult process and one that requires the most careful attention. Emphasis cannot
therefore be too strongly laid on the necessity of obtaining a representative sample of oilseeds for analysis.

v
DRAFT International Standard ISO/DIS 21294:2026(en)
Oilseeds — Manual sampling of oilseeds
1 Scope
This document specifies the requirements for manual sampling of oilseeds by manual means or by automated
mechanical means, for the purpose of assessing their quality and condition.
NOTE An example of “condition” is an odour due to a treatment product.
Stockpiles are excluded of the scope of this document.
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 664, Oilseeds — Reduction of laboratory sample to test sample
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
manual sampling
sampling by manual means or by automated mechanical means of at least one position within a lot (3.3).
EXAMPLE Hand-scoops, shovels, suitable sampling buckets, automatic suction probes, automatic samplers
(sequenced).
3.2
consignment
quantity of oilseeds dispatched or received at one time and covered by a particular contract or shipping
document
Note 1 to entry: The consignment can be composed of one or more lots or part of a lot.
3.3
lot
stated quantity of the consignment (3.2) which can be sampled in order to determine its quality and condition
Note 1 to entry: The quantity of the lot can be of a mass up to 5 000 t.
3.4
increment sample
quantity of material taken at one time at each individual sampling point (at each individual sampling time
for moving lot) throughout a lot (3.3)

ISO/DIS 21294:2026(en)
3.5
Composite sample
bulk sample
quantity of material representative of the consignment (3.2) or of the lot (3.3) obtained by combining
and blending the increments samples (3.4) of the same size taken from the lot (3.3) of oilseeds during its
transference.
3.6
Bulk
Product distributed in a large unpackaged quantity
Note 1 to entry: “bulk sample” is different of “bulk”.
3.7
homogenization
thorough blending by mechanical or manual means so that any contaminants or foreign materials are
thoroughly distributed throughout the bulk sample or laboratory sample (3.8)
3.8
laboratory sample
representative quantity of oilseeds obtained by unbiased reduction of a composite sample (3.5) using
appropriate methods to obtain a desired quantity intended for laboratory analysis. Analytical data from the
collected samples should be representative of the lot (3.3) as a whole.
4 Principles
4.1 Representative samples
The laboratory samples shall be as representative as possible of the lots from which they are taken. Each
consignment shall be divided, actually or notionally, into lots of 500 t to 5 000 t according to its size. At
least a minimum number of increments sample shall be taken from each lot and homogenized carefully in
order to obtain a composite sample from which laboratory samples may be taken by successive division. A
laboratory sample shall result from the sampling of each lot (see Table 1).
A diagram showing the different steps for laboratory samples is given in Annex A.
4.2 Oilseeds sampling
This document covers both the manual sampling of oilseeds in motion while being transferred and the
manual sampling and automated non-systematic mechanical sampling of static lots. Samples shall be taken
using manual or automatic methods. Where possible, sampling should be performed when the oilseeds are
flowing (e.g. during loading or unloading) so that the constituent parts of the lot have the same probability
of being sampled and comply with the minimum number and mass of in
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