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SLOVENSKI STANDARD
01-januar-2023
Nadomešča:
SIST EN ISO 12625-15:2015
Tissue papir in proizvodi iz tissue papirja - 15. del: Ugotavljanje optičnih lastnosti -
Merjenje beline in barve s svetilom C/2° (osvetlitev v prostoru) (ISO
12625‑15:2022)
Tissue paper and tissue products - Part 15: Determination of optical properties -
Measurement of brightness and colour with C/2° (indoor daylight) illuminant (ISO 12625-
15:2022)
Tissue-Papier und Tissue-Produkte - Teil 15: Bestimmung von optischen Eigenschaften -
Messung von Brightness und Farbe unter Lichtart C/2° (Tageslichtbedingungen in
Innenräumen) (ISO 12625‑15:2022)
Papier tissue et produits tissue - Partie 15: Détermination des propriétés optiques -
Mesurage du degré de blancheur et de la couleur avec l'illuminant C/2° (lumière du jour
à l'intérieur) (ISO 12625-15:2022)
Ta slovenski standard je istoveten z: EN ISO 12625-15:2022
ICS:
85.080.20 Tissue papir Tissue paper
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 12625-15
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 85.080.20 Supersedes EN ISO 12625-15:2015
English Version
Tissue paper and tissue products - Part 15: Determination
of optical properties - Measurement of brightness and
colour with C/2° (indoor daylight) illuminant (ISO 12625-
15:2022)
Papier tissue et produits tissue - Partie 15: Tissue-Papier und Tissue-Produkte - Teil 15:
Détermination des propriétés optiques - Mesurage du Bestimmung von optischen Eigenschaften - Messung
degré de blancheur et de la couleur avec l'illuminant von Brightness und Farbe unter LichtartC/2°
C/2° (lumière du jour à l'intérieur) (ISO 12625- (Tageslichtbedingungen in Innenräumen) (ISO 12625-
15:2022) 15:2022)
This European Standard was approved by CEN on 7 October 2022.
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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 12625-15:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 12625-15:2022) has been prepared by Technical Committee ISO/TC 6 "Paper,
board and pulps" in collaboration with Technical Committee CEN/TC 172 “Pulp, paper and board” 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 April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
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 12625-15:2015.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 12625-15:2022 has been approved by CEN as EN ISO 12625-15:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 12625-15
Second edition
2022-10
Tissue paper and tissue products —
Part 15:
Determination of optical properties —
Measurement of brightness and colour
with C/2° (indoor daylight) illuminant
Papier tissue et produits tissue —
Partie 15: Détermination des propriétés optiques — Mesurage du
degré de blancheur et de la couleur avec l'illuminant C/2° (lumière du
jour à l'intérieur)
Reference number
ISO 12625-15:2022(E)
ISO 12625-15:2022(E)
© ISO 2022
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
Email: [email protected]
Website: www.iso.org
Published in Switzerland
ii
ISO 12625-15:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 3
5 Apparatus . 3
6 Calibration .4
7 Sampling . 4
8 Conditioning . 5
9 Preparation of test pieces .5
10 Procedure .5
10.1 General . 5
10.2 Measurement of ISO brightness . 5
10.3 Measurement of colour (C/2°) . 5
11 Calculation . 6
11.1 ISO brightness . 6
11.2 Colour C/2° . . 6
11.2.1 Single values . 6
11.2.2 Mean value . 6
11.2.3 Dispersion of the results . 7
12 Test report . 7
Annex A (informative) Precision . 8
Bibliography .10
iii
ISO 12625-15:2022(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 6, Paper, board and pulps, Subcommittee
SC 2, Test methods and quality specifications for paper and board, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 172, Pulp, paper and board, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 12625-15:2015), which has been
technically revised.
The main changes are as follows:
— removed alternative formulae in 11.2.1 because they are not relevant for tissue paper;
— updated tables in Annex A to include data to 0,01 and corrected errors in the tables;
— changed C/2° Brightness to ISO
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