EN ISO 18314-2:2018

SLOVENSKI STANDARD
01-november-2018
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Analytical colorimetry - Part 2: Saunderson correction, solutions of the Kubelka-Munk
equation, tinting strength, hiding power (ISO 18314-2:2015)
Analytische Farbmessung - Teil 2: Saunderson-Korrektur, Lösungen der Kubelka-Munk-
Gleichung, Farbstärke, Deckvermögen (ISO 18314-2:2015)
Analyse colorimétrique - Partie 2: Correction de Saunderson, solutions de l'équation de
Kubelka-Munk, force colorante, pouvoir couvrant (ISO 18314-2:2015)
Ta slovenski standard je istoveten z: EN ISO 18314-2:2018
ICS:
17.180.20 Barve in merjenje svetlobe Colours and measurement of
light
87.060.10 Pigmenti in polnila Pigments and extenders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 18314-2
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2018
EUROPÄISCHE NORM
ICS 87.060.10
English Version
Analytical colorimetry - Part 2: Saunderson correction,
solutions of the Kubelka-Munk equation, tinting strength,
hiding power (ISO 18314-2:2015)
Analyse colorimétrique - Partie 2: Correction de Analytische Farbmessung - Teil 2: Saunderson-
Saunderson, solutions de l'équation de Kubelka-Munk, Korrektur, Lösungen der Kubelka-Munk-Gleichung,
force colorante, pouvoir couvrant (ISO 18314-2:2015) Farbstärke, Deckvermögen (ISO 18314-2:2015)
This European Standard was approved by CEN on 19 February 2018.

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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 18314-2:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 18314-2:2015 has been prepared by Technical Committee 256 "Pigments, dyestuffs and
extenders”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 April 2019, and conflicting national standards shall be
withdrawn at the latest by April 2019.
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, 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 18314-2:2015 has been approved by CEN as EN ISO 18314-2:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 18314-2
First edition
2015-06-01
Analytical colorimetry —
Part 2:
Saunderson correction, solutions of
the Kubelka-Munk equation, tinting
strength, hiding power
Analyse colorimétrique —
Partie 2: Correction de Saunderson, solutions de l’équation de
Kubelka-Munk, force colorante, pouvoir couvrant
Reference number
ISO 18314-2:2015(E)
©
ISO 2015
ISO 18314-2:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
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copyright@iso.org
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ii © ISO 2015 – All rights reserved

ISO 18314-2:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Terms, definitions, symbols, and abbreviated terms . 1
2.1 Terms and definitions . 1
2.2 Symbols and abbreviated terms. 2
3 Saunderson correction . 4
3.1 General . 4
3.2 Incidence diffuse, observation 0° (d/0°) . 4
3.3 Incidence 45°, observation 0° (45°: 0°) . 4
4 Solution of the Kubelka-Munk equations . 5
5 Determination of relative tinting strength and residual colour difference of
coloured pigments . 6
5.1 General . 6
5.2 Principle . 6
5.3 Procedure . 6
5.3.1 General. 6
5.3.2 Evaluation of absorption at the absorption maximum . 7
5.3.3 Evaluation of the weighted K/S sum . 7
5.3.4 Evaluation by equalizing the tristimulus value, Y .8
5.3.5 Evaluation by equalizing the smallest of the tristimulus values X, Y, and Z .8
5.3.6 Evaluation by equalizing the shade depth . 9
6 Determination of hiding power of pigmented media .10
6.1 General .10
6.2 Example for white or light coloured paints with a contrast ratio of 0,98 as hiding
power criterion .11
7 Repeatability and reproducibility .12
8 Test report .12
Annex A (normative) Tables of coefficients for calculating a(φ) values (standard illuminant
D65 and 10° standard observer) .13
Annex B (normative) Tables of coefficients for calculating a(φ) values (standard illuminant
C and 2° standard observer) .15
Bibliography .17
ISO 18314-2:2015(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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 256, Pigments, dyestuffs and fillers.
ISO 18314 consists of the following parts, under the general title Analytical colorimetry:
— Part 1: Practical colour measurement
— Part 2: Saunderson correction, solutions of the Kubelka-Munk equation, tinting strength, hiding power
— Part 3: Special indices
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 18314-2:2015(E)
Analytical colorimetry —
Part 2:
Saunderson correction, solutions of the Kubelka-Munk
equation, tinting strength, hiding power
1 Scope
This part of ISO 18314 specifies the Saunderson correction for different measurement geometries and
the solutions of the Kubelka-Munk equation for hiding and transparent layers. It also specifies methods
for the calculations of the tinting strength incl
...