Paints and varnishes - Determination of water content - Gas-chromatographic method (ISO 23168:2019)

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.

Beschichtungsstoffe - Bestimmung des Wassergehaltes - Gaschromatographisches Verfahren (ISO 23168:2019)

Dieses Dokument legt ein Verfahren zum Bestimmen des Wassergehaltes von wasserhaltigen Beschichtungs¬stoffen und deren Rohstoffen mittels eines Gaschromatographen fest. Der bevorzugte Arbeitsbereich dieses Prüfverfahrens liegt bei einem Wassergehalt von 15 % bis 90 % (Massenanteil), das Verfahren kann jedoch auch außerhalb dieses Bereiches angewendet werden.

Peintures et vernis - Détermination de la teneur en eau - Méthode par chromatographie en phase gazeuse (ISO 23168:2019)

Barve in laki - Določevanje vode - Metoda s plinsko kromatografijo (ISO 23168:2019)

General Information

Status
Published
Public Enquiry End Date
01-Oct-2020
Publication Date
27-Jan-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Jan-2021
Due Date
18-Mar-2021
Completion Date
28-Jan-2021

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SLOVENSKI STANDARD
SIST EN ISO 23168:2021
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
SIST EN ISO 23168:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 23168:2021
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SIST EN ISO 23168:2021
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.
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SIST EN ISO 23168:2021
EN ISO 23168:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 23168:2021
EN ISO 23168:2020 (E)
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

EN ISO 23168:2020 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of

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.

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SIST EN ISO 23168:2021
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SIST EN ISO 23168:2021
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
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SIST EN ISO 23168:2021
ISO 23168:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© 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

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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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SIST EN ISO 23168:2021
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 2019 – All rights reserved iii
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SIST EN ISO 23168:2021
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
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SIST EN ISO 23168:2021
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
...

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