SIST EN ISO 10565:2026
(Main)Oilseeds - Simultaneous determination of oil and water contents - Method using pulsed nuclear magnetic resonance spectrometry (ISO 10565:2026)
- Abstract
This document specifies a rapid method for the determination of the oil and water contents in oilseeds using pulsed nuclear magnetic resonance (NMR).
It is applicable to rapeseeds, linseeds and sunflower seeds with a water content less than 10 % and soya beans with a water content less than 14 %. For seeds with higher water contents, drying is necessary before the water and oil content can be determined by pulsed NMR.
NOTE 1 This method has been tested with rapeseeds, soya beans, linseeds and sunflower seeds. This does not, however, preclude its applicability to other commercial seeds whose oil is liquid at the temperature of measurement.
NOTE 2 The reproducibility values obtained are generally higher than those obtained by the reference methods (see ISO 659 and ISO 665) because they depend on the variability between the instruments and on that existing between the calibrations, which depends on the measurement accuracy of the reference methods.
NOTE 3 The results of the comparison test between different magnets and different volumes of seed samples (see Annex B) are in coherence with the results of the interlaboratory test (see Annex A).
- Status
- Published
- Public Enquiry End Date
- 30-Jul-2025
- Publication Date
- 08-Oct-2026
- Technical Committee
- KŽP - Agricultural food products
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 06-Oct-2026
- Due Date
- 11-Dec-2026
- Completion Date
- 09-Oct-2026
SIST EN ISO 10565:2026 is a European Standard published by CEN that adopts ISO 10565:2026 without modification. It specifies a rapid pulsed nuclear magnetic resonance (NMR) method for the simultaneous determination of oil and water contents in oilseeds, mainly for laboratories and operators working with rapeseeds, linseeds, sunflower seeds and soya beans.
What does SIST EN ISO 10565:2026 specify?
SIST EN ISO 10565:2026 specifies the scope, the NMR principle, sample preparation and conditioning, calibration, measurement, result expression, precision, and the test report for oilseed analysis. In practice, it tells a laboratory how to set up the instrument, prepare calibration samples, measure test samples, and report the result in a consistent way.
The method applies to rapeseeds, linseeds and sunflower seeds with water content below 10 %, and to soya beans with water content below 14 %. For higher moisture levels, the seeds must be dried before pulsed NMR can be used. The scope also notes that the method was tested on rapeseeds, soya beans, linseeds and sunflower seeds, and may also suit other commercial seeds whose oil is liquid at the measurement temperature.
Sampling is outside the method itself, and the document points users to a recommended sampling standard. The document is organized into 13 clauses and 2 informative annexes.
| Annex | What it covers |
|---|---|
| Annex A | Results of interlaboratory tests |
| Annex B | Results of a test comparing different equipment |
What are the key requirements of SIST EN ISO 10565:2026?
SIST EN ISO 10565:2026 focuses on calibrated pulsed NMR measurements, controlled sample handling, and repeatable measurement conditions. The most important requirements are the ones that affect whether the measured oil and water values are valid in daily laboratory work.
Sample suitability and conditioning
SIST EN ISO 10565:2026 requires calibration and test samples to be brought into the test room at least 60 minutes before measurement so they reach equilibrium temperature. It also requires whole seeds to be homogeneous, as far as possible free from impurities, and free from metallic objects such as staples or needles.
This matters because temperature differences, impurities, and metal near the spectrometer can distort the signal and reduce measurement reliability.
Calibration strategy
SIST EN ISO 10565:2026 requires calibration with at least three calibration samples, although more are preferred. It allows two routes: procedure A uses several independent samples with known water or oil contents, while procedure B uses one sample and varies the fill height to create several calibration points.
The calibration samples must be of the same species as the test samples and should have similar fatty acid composition. Their water content is determined with ISO 665 and their oil content with ISO 659 before calibration. This matters because the NMR result is only as good as the reference values used to build the calibration curve.
Instrument and room conditions
SIST EN ISO 10565:2026 requires a pulsed low-resolution NMR spectrometer, suitable sample tubes, an analytical balance, a drying oven, and dishes for drying when needed. The test room temperature must match the manufacturer’s instructions, and calibration and measurement should be done under the same temperature conditions, within ±2 °C.
This means the laboratory has to control the environment, not just the sample. The document also warns to keep metallic objects away from the instrument.
Measurement of the test sample
SIST EN ISO 10565:2026 requires at least two determinations on test portions taken from the same test sample. Test portions should be prepared at constant volume where possible, either by transferring a chosen volume into the tube or by filling the tube to an optimum height ± 5 mm.
Before each series of measurements, or at least once a day, the calibration has to be checked with a sample of known oil and water contents. This is important because instrument drift or a wrong calibration curve can affect every result in the series.
Handling higher-moisture seeds
SIST EN ISO 10565:2026 gives a separate procedure for rapeseeds, linseeds, sunflower seeds and soya beans above the moisture limits in the scope. In that case, the test portion is dried at 103 °C for 1 hour, cooled, reweighed, and measured again.
The measured water value is then corrected back to the original sample mass. This matters because excess free water interferes with the spin-echo signal and would otherwise give an incorrect result.
Expression of results and precision
SIST EN ISO 10565:2026 requires the arithmetic mean of two or more determinations if the repeatability check is satisfied. If repeatability is not satisfied, the results are rejected and two more determinations are carried out. Results are expressed to one decimal place.
The precision clause gives repeatability and reproducibility limits for rapeseed, sunflower seed, soya bean and linseed. For users, this is the practical check on whether two results from the same lab or from different labs are close enough to be believable.
Test report
SIST EN ISO 10565:2026 requires the report to identify the sample, name the NMR spectrometer, state the sampling method if known, identify ISO 10565 as the test method, note any optional settings or incidents that could affect the result, give the final quoted result if repeatability was checked, and state the test date.
That makes the result traceable for audits, disputes, and internal quality records.
What terms does SIST EN ISO 10565:2026 define?
SIST EN ISO 10565:2026 does not list formal terms in Clause 3, but the document uses several key technical expressions that matter in practice.
- NMR - Nuclear magnetic resonance, the measurement technique used to estimate oil and water content from the hydrogen signal in the sample.
- FID - Free induction decay, the signal recorded after the first RF pulse and used as part of the oil-water calculation.
- RF pulse - Radiofrequency pulse, the electromagnetic pulse applied to excite the hydrogen nuclei in the sample.
- Spin-echo signal - The signal produced by the second RF pulse, used here so that only the oil phase contributes.
- Calibration curve - The stored relationship between measured NMR signals and known oil or water contents.
- Repeatability - The closeness of two results obtained in the same laboratory under the same conditions.
- Reproducibility - The closeness of results obtained in different laboratories under different conditions.
Who uses SIST EN ISO 10565:2026?
SIST EN ISO 10565:2026 is used by laboratories that analyze oilseeds, by operators of pulsed NMR spectrometers, and by technical staff responsible for calibration and quality control. It is also relevant for processors, traders, and buyers who need a fast laboratory method for oil and water content in rapeseeds, linseeds, sunflower seeds, and soya beans.
In practice, users apply it when they need a routine method for batch assessment, calibration against reference methods, or traceable reporting of oilseed composition.
What changed in SIST EN ISO 10565:2026 from the previous edition?
SIST EN ISO 10565:2026 supersedes EN ISO 10565:1998 and ISO 10565:1998. The foreword says the third edition is technically revised, with the scope clarified, additional protocol information added, and the results of a test comparing different equipment included.
Which standards are used with SIST EN ISO 10565:2026?
SIST EN ISO 10565:2026 refers to several standards that support sampling, calibration, reference values, and statistical treatment.
- ISO 659 - Provides the reference method for determining oil content, used for oil calibration and for determining oil in calibration samples.
- ISO 664 - Gives the method for reducing a laboratory sample to a test sample, which supports sample preparation before measurement.
- ISO 665 - Provides the reference method for determining moisture and volatile matter content, used for water calibration and for checking calibration samples.
- ISO 658 - Defines impurities in oilseeds, which supports the requirement for clean calibration samples.
- ISO 21294:2017 - Gives a recommended sampling method for oilseeds, used because sampling is not part of this method.
- ISO 5725:1986 - Is cited for the statistical treatment of precision data in the interlaboratory tests in Annex A.
What does the SIST EN ISO 10565:2026 document contain?
SIST EN ISO 10565:2026 contains a full calibration and measurement workflow, including sample conditioning, instrument setup, calibration with several sample options, and the special drying procedure for higher-moisture seeds. It also contains the formula-based correction used after drying, so the laboratory can convert the measured value back to the original sample basis.
The document includes precision tables for repeatability and reproducibility by seed type, a test report checklist, and informative annexes with interlaboratory and comparison-test results. Annex A provides statistical data from interlaboratory testing, while Annex B summarizes a comparison of different magnets and sample volumes. Those annexes help users judge how the method behaves across instruments and matrices in real laboratory work.
Relations
- Effective Date
- 01-Nov-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
SIST EN ISO 10565:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Oilseeds - Simultaneous determination of oil and water contents - Method using pulsed nuclear magnetic resonance spectrometry (ISO 10565:2026)". This standard covers: This document specifies a rapid method for the determination of the oil and water contents in oilseeds using pulsed nuclear magnetic resonance (NMR). It is applicable to rapeseeds, linseeds and sunflower seeds with a water content less than 10 % and soya beans with a water content less than 14 %. For seeds with higher water contents, drying is necessary before the water and oil content can be determined by pulsed NMR. NOTE 1 This method has been tested with rapeseeds, soya beans, linseeds and sunflower seeds. This does not, however, preclude its applicability to other commercial seeds whose oil is liquid at the temperature of measurement. NOTE 2 The reproducibility values obtained are generally higher than those obtained by the reference methods (see ISO 659 and ISO 665) because they depend on the variability between the instruments and on that existing between the calibrations, which depends on the measurement accuracy of the reference methods. NOTE 3 The results of the comparison test between different magnets and different volumes of seed samples (see Annex B) are in coherence with the results of the interlaboratory test (see Annex A).
This document specifies a rapid method for the determination of the oil and water contents in oilseeds using pulsed nuclear magnetic resonance (NMR). It is applicable to rapeseeds, linseeds and sunflower seeds with a water content less than 10 % and soya beans with a water content less than 14 %. For seeds with higher water contents, drying is necessary before the water and oil content can be determined by pulsed NMR. NOTE 1 This method has been tested with rapeseeds, soya beans, linseeds and sunflower seeds. This does not, however, preclude its applicability to other commercial seeds whose oil is liquid at the temperature of measurement. NOTE 2 The reproducibility values obtained are generally higher than those obtained by the reference methods (see ISO 659 and ISO 665) because they depend on the variability between the instruments and on that existing between the calibrations, which depends on the measurement accuracy of the reference methods. NOTE 3 The results of the comparison test between different magnets and different volumes of seed samples (see Annex B) are in coherence with the results of the interlaboratory test (see Annex A).
SIST EN ISO 10565:2026 is classified under the following ICS (International Classification for Standards) categories: 67.200.20 - Oilseeds. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 10565:2026 has the following relationships with other standards: It is inter standard links to SIST EN ISO 10565:1998, SIST EN 12245:2022, SIST EN ISO 11118:2025. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 10565:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2026
Nadomešča:
SIST EN ISO 10565:1998
Oljna semena - Simultano določanje olja in vode - Spektrometrija jedrske
magnetne resonance s pulznim delovanjem (ISO 10565:2026)
Oilseeds - Simultaneous determination of oil and water contents - Method using pulsed
nuclear magnetic resonance spectrometry (ISO 10565:2026)
Ölsaaten - Gleichzeitige Bestimmung des Öl- und Wassergehalts - Verfahren mit
gepulster Kernspinresonanzspektrometrie (ISO 10565:2026)
Graines oléagineuses - Détermination simultanée de la teneur en huile et en eau -
Méthode par spectrométrie par résonance magnétique nucléaire pulsée (ISO
10565:2026)
Ta slovenski standard je istoveten z: EN ISO 10565:2026
ICS:
67.200.20 Oljnice Oilseeds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 10565
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2026
EUROPÄISCHE NORM
ICS 67.200.20 Supersedes EN ISO 10565:1998
English Version
Oilseeds - Simultaneous determination of oil and water
contents - Method using pulsed nuclear magnetic
resonance spectrometry (ISO 10565:2026)
Graines oléagineuses - Détermination simultanée de la Ölsaaten - Gleichzeitige Bestimmung des Öl- und
teneur en huile et en eau - Méthode par spectrométrie Wassergehalts - Verfahren mit gepulster
de résonance magnétique nucléaire pulsée (ISO Kernspinresonanzspektrometrie (ISO 10565:2026)
10565:2026)
This European Standard was approved by CEN on 20 September 2026.
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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10565:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 10565:2026) has been prepared by Technical Committee ISO/TC 34 “Food
products” in collaboration with Technical Committee CEN/TC 307 “Oilseeds, vegetable and animal fats
and oils and their by-products - Methods of sampling and analysis” the secretariat of which is held by
AFNOR.
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 2027, and conflicting national standards shall
be withdrawn at the latest by March 2027.
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 10565:1998.
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 10565:2026 has been approved by CEN as EN ISO 10565:2026 without any modification.
International
Standard
ISO 10565
Third edition
Oilseeds — Simultaneous
2026-09
determination of oil and water
contents — Method using pulsed
nuclear magnetic resonance
spectrometry
Graines oléagineuses — Détermination simultanée de la teneur
en huile et en eau — Méthode par spectrométrie de résonance
magnétique nucléaire pulsée
Reference number
ISO 10565:2026(en) © ISO 2026
ISO 10565:2026(en)
© ISO 2026
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: +41 22 749 01 11
Email: copyright@iso.org
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Published in Switzerland
ii
ISO 10565:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Samples . 2
5.1 General .2
5.2 Calibration samples .2
5.2.1 General .2
5.2.2 Samples for moisture-content calibration .2
5.2.3 Samples for oil-content calibration .2
6 Apparatus . 2
7 Sampling . 3
8 Preparation of test sample . 3
9 Calibration procedure . 3
9.1 General .3
9.2 Calibration procedure for the determination of water content .4
9.2.1 Procedure A: Three calibration samples (minimum) with known water contents .4
9.2.2 Procedure B: One calibration sample with known water content .5
9.3 Calibration procedure for the determination of oil content .6
9.3.1 Procedure A: Three calibration samples (minimum) with known oil contents .6
9.3.2 Procedure B: One calibration sample with known oil content.6
10 Procedure for measuring the test sample . 7
10.1 General .7
10.2 Requirements for the test room and conditioning of the test sample.7
10.3 Test portion .7
10.4 Determination .8
10.4.1 General case .8
10.4.2 Rapeseeds, linseeds and sunflower seeds having a water content greater than
a mass fraction of 10 % and soya beans having a water content greater than a
mass fraction of 14 % .8
11 Expression of the results . 9
12 Precision . 9
12.1 Interlaboratory tests .9
12.2 Repeatability .9
12.3 Reproducibility .9
13 Test report . 9
Annex A (informative) Results of interlaboratory tests .11
Annex B (informative) Results of test to compare different equipment .13
Bibliography .15
iii
ISO 10565:2026(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 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 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, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 307, Oilseeds, vegetable and animal fats and oils and their
by-products - Methods of sampling and analysis, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 10565:1998), which has been technically
revised.
The main changes are as follows:
— the scope has been clarified;
— additional information has been added to the protocol;
— the results of a test to compare different equipment have been added.
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
International Standard ISO 10565:2026(en)
Oilseeds — Simultaneous determination of oil and water
contents — Method using pulsed nuclear magnetic resonance
spectrometry
1 Scope
This document specifies a rapid method for the determination of the oil and water contents in oilseeds using
pulsed nuclear magnetic resonance (NMR).
It is applicable to rapeseeds, linseeds and sunflower seeds with a water content less than 10 % and soya
beans with a water content less than 14 %. For seeds with higher water contents, drying is necessary before
the water and oil content can be determined by pulsed NMR.
NOTE 1 This method has been tested with rapeseeds, soya beans, linseeds and sunflower seeds. This does not,
however, preclude its applicability to other commercial seeds whose oil is liquid at the temperature of measurement.
NOTE 2 The reproducibility values obtained are generally higher than those obtained by the reference methods (see
ISO 659 and ISO 665) because they depend on the variability between the instruments and on that existing between
the calibrations, which depends on the measurement accuracy of the reference methods.
NOTE 3 The results of the comparison test between different magnets and different volumes of seed samples (see
Annex B) are in coherence with the results of the interlaboratory test (see Annex A).
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 659, Oilseeds — Determination of oil content (Reference method)
ISO 664, Oilseeds — Reduction of laboratory sample to test sample
ISO 665, Oilseeds — Determination of moisture and volatile matter content
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Principle
Insertion of the test sample into the magnetic field of a pulsed NMR spectrometer.
Application of an alternating electromagnetic field in the form of an intense 90° radiofrequency (RF) pulse
which excites all the hydrogen nuclei. Recording of the free induction decay (FID) following the 90° pulse.
The maximum amplitude of this signal is proportional to the total number of protons from the water and oil
phases of the sample.
ISO 10565:2026(en)
Application of the second RF pulse, a so-called “180° pulse”, to produce a spin-echo signal when only the
signal from the oil phase contributes to the FID.
NOTE 1 The maximum amplitude of this echo signal is proportional to the oil content. It varies with the sample
temperature following a complex law. An increase in temperature decreases the measured value of the echo.
Calculation of the difference between the two amplitudes, which is proportional to the water content.
Automatic conversion of the measured signals, after suitable calibration of the apparatus, into percentages
of oil or water.
NOTE 2 Simultaneous indications of the oil and water contents can be given by some spectrometers equipped with
a minicomputer and a specific program.
5 Samples
5.1 General
Transfer the calibration and test samples to the test room at least 60 min before the determination to allow
them to reach equilibrium temperature.
For rapeseeds, linseeds and sunflower seeds with a water content greater than a mass fraction of 10 % and
soybeans with a water content greater than a mass fraction of 14 %, refer to 10.4.2. In this case, the NMR
spin-echo method does not give a correct value because the excess water (free water) contributes, together
with the oil, to the spin-echo signal. This excess water shall therefore be removed by drying to a moisture
level of below a mass fraction of 10 % for all seeds.
5.2 Calibration samples
5.2.1 General
Samples of oilseeds shall be of the same species as the test samples and of similar fatty acid compositions
(e.g. for the analysis of rapeseeds which are rich in erucic acid or sunflower seeds which are rich in oleic
acid).
Calibration samples shall be homogeneous and free from impurities. A definition of impurities is given in
[1]
ISO 658 .
5.2.2 Samples for moisture-content calibration
The water content of seeds can vary depending on storage conditions. Water content shall therefore be
determined in accordance with ISO 665 just prior to calibration.
5.2.3 Samples for oil-content calibration
Oil content shall be determined using the reference method specified in ISO 659.
6 Apparatus
Usual laboratory apparatus and, in particular, the following shall be used.
6.1 Pulsed low-resolution NMR spectrometer, suitable for measurement of the oil content and water
content of oilseeds, and meeting the precision requirements of 12.2 and 12.3.
The instrument’s parameters shall be in accordance with the instructions/specifications from the
manufacturer.
For all calibration and measurement operations, follow the user’s manual.
ISO 10565:2026(en)
The temperature of the test room shall be maintained in accordance with the instructions of the
manufacturer. Ensure that all operations during sample preconditioning before measurement (see 5.1),
calibration and measurement are carried out under the same conditions and, in particular, at the same
temperature (±2 °C). Therefore, the test room should be temperature controlled.
NOTE Usual range for the test room temperature is between 17 °C and 28 °C.
CAUTION — Remove metallic objects from the proximity of the NMR spectrometer.
6.2 Sample tubes, made of glass, suitable for use with the NMR spectrometer.
Follow the manufacturers’ instructions for suitable
...