EN ISO 787-17:2019

SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN ISO 787-17:2018
Splošne metode preskušanja pigmentov in polnil - 17. del: Primerjava moči
posvetlitve belih pigmentov (ISO 787-17:2019)
General methods of test for pigments and extenders - Part 17: Comparison of lightening
power of white pigments (ISO 787-17:2019)
Allgemeine Prüfverfahren für Pigmente und Füllstoffe - Teil 17: Vergleich des
Aufhellvermögens von Weißpigmenten (ISO 787-17:2019)
Méthodes générales d'essai des pigments et matières de charge - Partie 17:
Comparaison du pouvoir éclaircissant des pigments blancs (ISO 787-17:2019)
Ta slovenski standard je istoveten z: EN ISO 787-17:2019
ICS:
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 787-17
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 87.060.10 Supersedes EN ISO 787-17:2017
English Version
General methods of test for pigments and extenders - Part
17: Comparison of lightening power of white pigments
(ISO 787-17:2019)
Méthodes générales d'essai des pigments et matières Allgemeine Prüfverfahren für Pigmente und Füllstoffe -
de charge - Partie 17: Comparaison du pouvoir Teil 17: Vergleich des Aufhellvermögens von
éclaircissant des pigments blancs (ISO 787-17:2019) Weißpigmenten (ISO 787-17:2019)
This European Standard was approved by CEN on 12 April 2019.

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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 787-17:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 787-17:2019) has been prepared by Technical Committee ISO/TC 256
"Pigments, dyestuffs and extenders" in collaboration with Technical Committee CEN/TC 298 “Pigments
and extenders” 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 November 2019, and conflicting national standards
shall be withdrawn at the latest by November 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.
This document supersedes EN ISO 787-17:2017.
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 787-17:2019 has been approved by CEN as EN ISO 787-17:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 787-17
Third edition
2019-04
General methods of test for pigments
and extenders —
Part 17:
Comparison of lightening power of
white pigments
Méthodes générales d'essai des pigments et matières de charge —
Partie 17: Comparaison du pouvoir éclaircissant des pigments blancs
Reference number
ISO 787-17:2019(E)
©
ISO 2019
ISO 787-17:2019(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
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.
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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

ISO 787-17:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Reagent . 1
5 Apparatus . 2
6 Sampling . 2
7 Procedure. 2
7.1 Procedure A . 2
7.1.1 Incorporation of the white pigment into the blue paste by means of the
automatic muller. 2
7.1.2 Incorporation of the white pigment into the blue paste by means of a
hand muller or palette knife . 2
7.1.3 Procedure for the comparison . 3
7.2 Procedure B . 3
7.2.1 Incorporation of the white pigment into the blue paste by means of the
automatic muller. 3
7.2.2 Incorporation of the white pigment into the blue paste by means of a
hand muller or palette knife . 4
7.2.3 Procedure for the comparison . 4
8 Expression of results . 5
8.1 Procedure A . 5
8.2 Procedure B . 5
9 Test report . 5
ISO 787-17:2019(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 on 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 the following
URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 256, Pigments, dyestuffs and extenders.
This third edition cancels and replaces the second edition (ISO 787-17:2002), of which it constitutes a
minor revision. The changes compared to the previous edition are as follows:
— Clause 3 “Terms and definitions”, with a general reference to ISO 18451-1, has been added;
— CAS numbers have been added to the reagents;
— the text has been editorially revised.
A list of all parts in the ISO 787 series can be found on the ISO website.
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 787-17:2019(E)
General methods of test for pigments and extenders —
Part 17:
Comparison of lightening power of white pigments
1 Scope
This document specifies a general method of test for comparing the lightening (reducing) power of a
white pigment with the lightening power of an agreed sample of the same type.
Two procedures (A and B) are specified. Procedure A is quicker than procedure B and is suitable for
testing one sample of pigment; procedure B is better for testing several samples, and especially if a
pigment of unknown lightening power is being tested.
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 788, Ultramarine pigments for paints
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 18451-1, Pigments, dyestuffs and extenders — Terminology — Part 1: General terms
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 18451-1 apply.
ISO and IEC maintain terminological databases for use in standardization at t
...