EN ISO 8534:2017

SLOVENSKI STANDARD
01-maj-2017
1DGRPHãþD
SIST EN ISO 8534:2009
äLYDOVNHLQUDVWOLQVNHPDãþREHLQROMD'RORþHYDQMHYRGH.DUO)LVFKHUMHYD
PHWRGDEUH]SLULGLQD,62
Animal and vegetable fats and oils - Determination of water content - Karl Fischer
method (pyridine free) (ISO 8534:2017)
Tierische und pflanzliche Fette und Öle - Bestimmung des Wassergehalts - Karl-Fischer-
Verfahren (pyridinfrei) (ISO 8534:2017)
Corps gras d'origines animale et végétale - Détermination de la teneur en eau - Méthode
de Karl Fischer (sans pyridine) (ISO 8534:2017)
Ta slovenski standard je istoveten z: EN ISO 8534:2017
ICS:
67.200.10 5DVWOLQVNHLQåLYDOVNH Animal and vegetable fats
PDãþREHLQROMD and oils
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 8534
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2017
EUROPÄISCHE NORM
ICS 67.200.10 Supersedes EN ISO 8534:2008
English Version
Animal and vegetable fats and oils - Determination of
water content - Karl Fischer method (pyridine free) (ISO
8534:2017)
Corps gras d'origines animale et végétale - Tierische und pflanzliche Fette und Öle - Bestimmung
Détermination de la teneur en eau - Méthode de Karl des Wassergehalts - Karl-Fischer-Verfahren
Fischer (sans pyridine) (ISO 8534:2017) (pyridinfrei) (ISO 8534:2017)
This European Standard was approved by CEN on 8 February 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8534:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 8534:2017) 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 August 2017, and conflicting national standards shall
be withdrawn at the latest by August 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
This document supersedes EN ISO 8534:2008.
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, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 8534:2017 has been approved by CEN as EN ISO 8534:2017 without any modification.
INTERNATIONAL ISO
STANDARD 8534
Third edition
2017-02
Animal and vegetable fats and oils —
Determination of water content —
Karl Fischer method (pyridine free)
Corps gras d’origines animale et végétale — Détermination de la
teneur en eau — Méthode de Karl Fischer (sans pyridine)
Reference number
ISO 8534:2017(E)
©
ISO 2017
ISO 8534:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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copyright@iso.org
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ii © ISO 2017 – All rights reserved

ISO 8534:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents . 1
6 Apparatus . 2
7 Sampling . 2
8 Preparation of the test sample . 2
9 Procedure. 3
9.1 Titre . 3
9.2 Test portion . 4
9.3 Determination . 5
10 Expression of results . 5
11 Precision of the method . 6
11.1 Interlaboratory test. 6
11.2 Repeatability . 6
11.3 Reproducibility . 6
12 Test report . 6
Annex A (informative) Results of interlaboratory tests. 7
Annex B (informative) Information and precision data on the use of the coulometric method .8
Bibliography .10
ISO 8534:2017(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
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/d irectives).
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/p atents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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: ww w .iso. org/iso / foreword. html.
This document was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 11,
Animal and vegetable fats and oils.
This third edition cancels and replaces the second edition (ISO 8534:2008), of which it constitutes a
minor revision to exclude the applicability for fat coming from milk and milk products.
iv © ISO 2017 – All rights reserved

ISO 8534:2017(E)
Introduction
The determination of the water content of fats and oils according to Karl Fischer is carried out by two
different procedures. This document specifies the volumetric Karl Fischer method for the determination
of higher milligram levels of water (high level moisture). It is used for samples having between 1 mg
and 100 mg of water in the sample.
Annex B specifies a coulometric titration, which requires between 10 µg and 10 mg water in the sample.
The coulometric method is more sensitive than the volumetric method and permits the determination
of lower water contents.
INTERNATIONAL STANDARD ISO 8534:2017(E)
Animal and vegetable fats and oils — Determination of
water content — Karl Fischer method (pyridine free)
1 Scope
This document specifies a method for the determination of the water content of animal and vegetable
fats and oils (hereinafter referred to as fats) using Karl Fischer apparatus and a reagent which is free of
pyridine.
Milk and milk products (or fat coming from milk and milk products) are excluded from the scope of this
document.
2 Normative references
The following documents
...