Cocoa beans — Sampling

ISO 2292:2017 specifies general conditions relating to sampling for the determination of the quality of cocoa beans. It also gives requirements and recommendations on the procedure to be followed for sampling cocoa beans in bags and in bulk.

Fèves de cacao — Échantillonnage

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Publication Date
Technical Committee
Drafting Committee
Current Stage
9060 - Close of review
Start Date
Ref Project


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ISO 2292:2017 - Cocoa beans -- Sampling
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Standards Content (Sample)

Second edition
Cocoa beans — Sampling
Fèves de cacao — Échantillonnage
Reference number
ISO 2292:2017(E)
ISO 2017

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ISO 2292:2017(E)

© ISO 2017, Published in Switzerland
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ISO 2292:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Apparatus . 2
4.1 Sampling from bags . 2
4.2 Sampling from bulk . 2
4.3 Mixing and dividing . 2
5 Sampling . 2
5.1 General . 2
5.2 Minimum and maximum size to be represented by a sample . 3
5.2.1 Minimum . 3
5.2.2 Maximum . 3
5.3 Cocoa beans in bags . 3
5.4 Cocoa beans in bulk . 4
5.4.1 General. 4
5.4.2 Moving stream . 4
5.4.3 Stationary . 4
5.4.4 Discharge from containers . 5
5.5 Reference sample . 5
5.6 Sampling period . 6
5.6.1 General. 6
5.6.2 Discharge . 6
5.6.3 Loading . 6
6 Sampling report. 6
Annex A (informative) Sampling apparatus . 7
Annex B (informative) Additional guidance for sampling of bags .10
Annex C (informative) Sample retention .11
Annex D (informative) Example of a sampling report for cocoa beans in bags .12
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ISO 2292:2017(E)

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
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
Any trade name used in this document is information given for the convenience of users and does not
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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
This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee
SC 18, Cocoa.
This second edition cancels and replaces the first edition (ISO 2292:1973), which has been technically
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ISO 2292:2017(E)

The objective of sampling is to obtain a properly representative sample of a quantity of cocoa beans for
the purpose of examination and analysis.
Correct sampling is a difficult operation that requires careful attention and planning as to how a
representative sample can be drawn from a quantity of goods presented for sampling. It takes into
account the existence of any prevailing constraints or conditions that may create complications for
The procedures described in this document are recognized as good practice to be followed whenever
practicable. It is recognized that it is difficult to lay down a set procedure to be followed in every case
and that particular circumstances may require some modification of the method adopted.
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Cocoa beans — Sampling
1 Scope
This document specifies general conditions relating to sampling for the determination of the quality
of cocoa beans. It also gives requirements and recommendations on the procedure to be followed for
sampling cocoa beans in bags and in bulk.
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 2451, Cocoa beans — Specification and quality requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 2451 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at
— ISO Online browsing platform: available at
bill of lading quantity
quantity of goods confirmed in a document issued by a carrier/shipping line which details a shipment of
goods and gives title of that shipment to a specified party
composite sample
mixed sample formed by combining all the primary samples (3.5) or incremental samples (3.3), as
appropriate, drawn from the lot (3.4)
incremental sample
small quantity of beans not exceeding 1 kg taken from a lot (3.4) of bulk cocoa beans
Note 1 to entry: The requirements for sampling from bulk cocoa beans are specified in 5.4.
quantity of cocoa beans in bags or in bulk established at any point in the cocoa supply chain and from
which primary samples (3.5) and/or incremental samples (3.3) are drawn for quality analysis purposes
Note 1 to entry: The requirements for quality analysis are specified in ISO 2451.
primary sample
small quantity of cocoa beans taken at a single position from a randomly selected sound (3.10) bag
Note 1 to entry: The requirements for sampling from cocoa beans in bags are specified in 5.3.
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ISO 2292:2017(E)

process by which a composite sample (3.2) is reduced by use of an appropriate conical divider, quartering
irons or other suitable dividing apparatus so that the resulting reduced material is proportionally the
same in all aspects as the original composite sample
reference sample
representative sample prepared by successively quartering (3.6) the composite sample (3.2) such that a
minimum of 2 kg net remains
person who is competent to draw samples
Note 1 to entry: The requirements on how to draw samples are specified in Clause 5.
process of drawing primary samples (3.5) and/or incremental samples (3.3), and thereafter preparing a
composite sample (3.2) from which a reference sample (3.7) is established
material that has not been damaged in transit or in storage
EXAMPLE Sound cocoa beans or bags.
place that is suitable in all respects for the storage of cocoa beans
4 Apparatus
4.1 Sampling from bags
A sampling spear or sampling horn specially designed for bags should be used (see Figures A.1, A.2 and
A.3 for examples).
4.2 Sampling from bulk
Bulk sampling spears (see Figure A.4 for an example) should be used for drawing samples from a
stationary pile of cocoa beans (see 5.4.3 and 5.4.4). Sampling scoops (see Figures A.5 and A.6 for
examples) should be used for drawing small samples periodically from a moving stream of cocoa beans.
4.3 Mixing and dividing
Conical dividers, quartering irons or other suitable dividing apparatus should be used.
5 Sampling
5.1 General
The objective of sampling is to obtain a properly representative sample of a lot of cocoa beans. Sampling
shall be carried out by a sampler. A sufficient number of primary samples or incremental samples
(as appropriate) shall be taken to provide a representative composite sample. The different types of
samples in case of sampling from bags and bulk are shown in Figure 1 a) and Figure 1 b), respectively.
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ISO 2292:2017(E)

Reference samples shall be promptly sealed by the interested parties; interested parties are usually
buyers and sellers or their respective representatives/agents.
Where a lot contains material that is not sound, it shall be segregated from the sound material pending
a decision on how such damaged material is to be dealt with. Where the handling of the lot has created
any loose whole cocoa beans and/or sweepings of cocoa material other than whole beans then this
material shall be recovered, sampled separately and stored in separate bags adjacent to the sound
cocoa of the lot.
Reference samples shall only be prepared from the sound material.
Bags Bulk
Primary sample Incremental sample
Compositesample Compositesample
Reference sample Reference sample
Test sample
Test sample
a) Sampling from bags b) Sampling from bulk
Figure 1 — Flowcharts of derivative samples when sampling from bags or bulk
5.2 Minimum and maximum size to be represented by a sample
5.2.1 Minimum
When the bill of lading or warehouse warrant refers to more than one main shipping mark, each of the
quantities represented by those marks shall be subject to separate sampling, provided that each mark
individually represents 25 t or more.
When the bill of lading or warehouse warrant refers to several main shipping marks, one or more of
which represents less than 25 t, interested parties may choose to have only one sample to represent all
those marks.
Samples shall be sealed and labelled in accordance with 5.5.
5.2.2 Maximum
A single reference sample shall not represent a lot of more than 250 t. Lots larger than 250 t shall be
represented by separate samples each representing no more than 250 t.
5.3 Cocoa beans in bags
A minimum of 30 % of the sound bags shall be sampled. The amount drawn shall be a minimum of
300 beans per tonne. One primary sample shall be drawn from each sound bag selected for sampling.
The position of the sampling point within each sound bag selected at random shall ensure an equal
distribution of samples drawn from the top, centre or bottom of the bags within the lot.
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ISO 2292:2017(E)

Upon completion of the loading or discharge of the bill of lading quantity, all primary samples shall be
emptied on to a thoroughly clean flat surface and in an area free from any possible contamination.
The composite sample is to be thoroug

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