EN ISO 23168:2020

SLOVENSKI STANDARD
01-marec-2021
Barve in laki - Določevanje vode - Metoda s plinsko kromatografijo (ISO
23168:2019)
Paints and varnishes - Determination of water content - Gas-chromatographic method
(ISO 23168:2019)
Beschichtungsstoffe - Bestimmung des Wassergehaltes - Gaschromatographisches
Verfahren (ISO 23168:2019)
Peintures et vernis - Détermination de la teneur en eau - Méthode par chromatographie
en phase gazeuse (ISO 23168:2019)
Ta slovenski standard je istoveten z: EN ISO 23168:2020
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 23168
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2020
EUROPÄISCHE NORM
ICS 87.040
English Version
Paints and varnishes - Determination of water content -
Gas-chromatographic method (ISO 23168:2019)
Peintures et vernis - Détermination de la teneur en eau Beschichtungsstoffe - Bestimmung des Wassergehaltes
- Méthode par chromatographie en phase gazeuse (ISO - Gaschromatographisches Verfahren (ISO
23168:2019) 23168:2019)
This European Standard was approved by CEN on 30 November 2020.

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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 23168:2020 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 23168:2019 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over as
which is held by DIN.
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 June 2021, and conflicting national standards shall be
withdrawn at the latest by June 2021.
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.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 23168:2019 has been approved by CEN as EN ISO 23168:2020 without any modification.

INTERNATIONAL ISO
STANDARD 23168
First edition
2019-04
Paints and varnishes — Determination
of water content — Gas-
chromatographic method
Peintures et vernis — Détermination de la teneur en eau — Méthode
par chromatographie en phase gazeuse
Reference number
ISO 23168:2019(E)
©
ISO 2019
ISO 23168:2019(E)
© ISO 2019
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
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below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 23168:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 2
5.1 Gas chromatograph . 2
5.2 Sample injection system . 2
5.3 Oven . 2
5.4 Detector . 2
5.5 Capillary column. 2
5.6 Injection syringe . 2
5.7 Data processing . 2
5.8 Sample vials . 2
5.9 Gas filter . 2
5.10 Carrier gas . 3
5.11 Analytical balance. 3
5.12 Bottle-top dispenser . 3
6 Reagents and materials . 3
6.1 Internal standard (anhydrous) . 3
6.2 Dilution solvent . 3
6.3 Water . 3
6.4 Molecular sieve . 3
7 Sampling . 3
8 Procedure. 4
8.1 Gas-chromatographic conditions . 4
8.2 Water content of the dilution solvent . 4
8.3 Calibration . 4
8.4 Sample preparation . 4
8.5 Quantitative determination of water content . 5
9 Expression of results . 6
10 Precision . 6
10.1 General . 6
10.2 Repeatability limit, r . 6
10.3 Reproducibility limit, R . 6
11 Test report . 7
Annex A (informative) Example of gas-chromatographic conditions. 8
Annex B (informative) Information about precision . 9
Bibliography .11
ISO 23168:2019(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/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).
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 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes.
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 2019 – All rights reserved

INTERNATIONAL STANDARD ISO 23168:2019(E)
Paints and varnishes — Determination of water content —
Gas-chromatographic method
1 Scope
This document specifies a method for the determination of the water content of water-borne coating
materials and their raw materials by using a gas chromatograph. The preferred working range of this
test method is from a water mass fraction of 15 % to a water mass fraction of 90 % but the method can
be applied outside of this range.
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 760, Determination of water — Karl Fischer method (General method)
ISO 1513, Paints and varnishes — Examination and preparation of test samples
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 4618, Paints and varnishes — Terms and definitions
ISO 15528, Paints, varnishes and raw materi
...