EN ISO 13468-1:2019

Plastics - Determination of the total luminous transmittance of transparent materials - Part 1: Single-beam instrument (ISO 13468-1:2019)

This document covers the determination of the total luminous transmittance, in the visible region of the spectrum, of planar transparent and substantially colourless plastics, using a single-beam photometer with a specified CIE Standard light source and photodetector. This document cannot be used for plastics which contain fluorescent materials.
This document is applicable to transparent moulding materials, films and sheets not exceeding 10 mm in thickness.
NOTE 1    Total luminous transmittance can also be determined by a double-beam spectrophotometer as in ISO 13468-2. This document, however, provides a simple but precise, practical and quick determination. This method is suitable for use not only for analytical purposes but also for quality control.
NOTE 2    Substantially colourless plastics include those which are faintly tinted.
NOTE 3    Specimens more than 10 mm thick can be measured provided the instrument can accommodate them, but the results might not be comparable with those obtained using specimens less than 10 mm thick.

Kunststoffe - Bestimmung des Gesamtlichttransmissionsgrades von transparenten Materialien - Teil 1: Einstrahlinstrument (ISO 13468-1:2019)

Dieses Dokument deckt die Bestimmung des totalen Lichttransmissionsgrades im sichtbaren Bereich des Spektrums von ebenen transparenten und weitgehend farblosen Kunststoffen ab, indem ein Einstrahlfotometer mit gemäß CIE spezifizierter Normlichtquelle und Fotodetektor verwendet wird. Dieses Dokument kann nicht für Kunststoffe verwendet werden, die fluoreszierende Materialien enthalten.
Dieses Dokument ist anwendbar auf transparente Formmassen, Folien, Platten und Tafeln mit Dicken nicht größer als 10 mm.
ANMERKUNG 1   Der totale Lichttransmissionsgrad kann auch mit einem Zweistrahlspektralfotometer bestimmt werden, wie in ISO 13468 2 beschrieben. Dieses Dokument beschreibt eine einfache aber genaue, praktische und schnelle Bestimmung. Diese Methode wird nicht nur für analytische Zwecke sondern auch zur Qualitätskontrolle eingesetzt.
ANMERKUNG 2   Weitgehend farblose Kunststoffe sind auch solche, die eine schwache Einfärbung enthalten.
ANMERKUNG 3   Probekörper, die dicker als 10 mm sind, können auch gemessen werden, wenn das Gerät dies vom Aufbau her zulässt, aber die Ergebnisse sind möglicherweise nicht mit denen vergleichbar, die an Probekörpern, die dünner als 10 mm sind, gewonnen wurden.

Plastiques - Détermination du facteur de transmission du flux lumineux total des matériaux transparents - Partie 1: Instrument à faisceau unique (ISO 13468-1:2019)

Le présent document traite de la détermination du facteur de transmission du flux lumineux total, dans le spectre visible des plastiques plans, transparents et pratiquement incolores, au moyen d'un photomètre à faisceau unique ayant une source de lumière spécifique et un photodétecteur conformes à la norme CIE. Le présent document ne peut pas être utilisé pour les plastiques contenant des matériaux fluorescents.
Le présent document est applicable aux matières moulées transparentes, aux films et aux feuilles d'épaisseur inférieure ou égale à 10 mm.
NOTE 1    Le facteur de transmission du flux lumineux total peut également être déterminé au moyen d'un spectrophotomètre à double faisceau, comme dans l'ISO 13468-2. Cependant, le présent document fournit une méthode simple, mais précise, qui permet de déterminer rapidement et commodément le facteur de transmission. Cette méthode est adaptée à l'emploi non seulement à des fins analytiques, mais également pour les besoins du contrôle qualité.
NOTE 2    Les plastiques pratiquement incolores comprennent les matériaux légèrement colorés.
NOTE 3    Les éprouvettes de plus de 10 mm d'épaisseur peuvent être utilisées pour le mesurage si la structure de l'instrument utilisé le permet, mais les résultats peuvent ne pas être comparables à ceux obtenus sur des éprouvettes de moins de 10 mm d'épaisseur.

Polimerni materiali - Določevanje celotne prepustnosti svetlobe prozornih materialov - 1. del: Instrument z enim žarkom (ISO 13468-1:2019)

Ta dokument zajema določanje skupne prepustnosti svetlobe, v vidnem območju spektra, ravninskih prozornih in bistveno brezbarvnih polimernih materialov s pomočjo enokanalnega fotometra s svetlobnim virom, določenim s standardom CIE, in fotodetektorjem. Tega dokumenta ni mogoče uporabiti za polimerne materiale,
ki vsebujejo fluorescentne materiale.
Ta dokument se uporablja za prozorne materiale za oblikovanje, filme in folije, ki niso debelejši od 10 mm.
OPOMBA 1: Skupno prepustnost svetlobe je mogoče določiti z dvokanalnim spektrofotometrom v skladu s standardom ISO 13468-2. Ta dokument pa omogoča preprosto, a natančno, praktično in hitro določevanje. Ta metoda ni primerna le za uporabo v analitične namene, temveč tudi za nadzor kakovosti.
OPOMBA 2: Med bistveno brezbarvne polimerne materiale spadajo tudi tisti, ki so rahlo obarvani.
OPOMBA 3: Primerke, debelejše od 10 mm, je mogoče izmeriti, če niso preveliki za instrument, vendar rezultati morda ne bodo primerljivi z rezultati, pridobljenimi s primerki, ki so tanjši od 10 mm.

General Information

• Status: Published
• Publication Date: 09-Jul-2019
• Withdrawal Date: 30-Jan-2020
• ICS: 83.080.01 - Plastics in general
• Technical Committee: CEN/TC 249 - Plastics
• Drafting Committee: CEN/TC 249 - Plastics
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 10-Jul-2019
• Completion Date: 10-Jul-2019
• Ref Project: SIST EN ISO 13468-1:2019 - Plastics - Determination of the total luminous transmittance of transparent materials - Part 1: Single-beam instrument (ISO 13468-1:2019)

Relations

• Replaces: EN ISO 13468-1:1996 - Plastics - Determination of total luminous transmittance of transparent materials - Part 1: Single-beam instrument (ISO 13468-1:1996)
• Effective Date: 05-Dec-2018

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2019
Nadomešča:
SIST EN ISO 13468-1:1999
Polimerni materiali - Določevanje celotne prepustnosti svetlobe prozornih
materialov - 1. del: Instrument z enim žarkom (ISO 13468-1:2019)
Plastics - Determination of the total luminous transmittance of transparent materials -
Part 1: Single-beam instrument (ISO 13468-1:2019)
Kunststoffe - Bestimmung des totalen Lichttransmissionsgrades von transparenten
Materialien - Teil 1: Einstrahlinstrument (ISO 13468-1:2019)
Plastiques - Détermination du facteur de transmission du flux lumineux total des
matériaux transparents - Partie 1: Instrument à faisceau unique (ISO 13468-1:2019)
Ta slovenski standard je istoveten z: EN ISO 13468-1:2019
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 13468-1
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2019
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 13468-1:1996
English Version
Plastics - Determination of the total luminous
transmittance of transparent materials - Part 1: Single-
beam instrument (ISO 13468-1:2019)
Plastiques - Détermination du facteur de transmission Kunststoffe - Bestimmung des totalen
du flux lumineux total des matériaux transparents - Lichttransmissionsgrades von transparenten
Partie 1: Instrument à faisceau unique (ISO 13468- Materialien - Teil 1: Einstrahlinstrument (ISO 13468-
1:2019) 1:2019)
This European Standard was approved by CEN on 18 June 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, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13468-1:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 13468-1:2019) has been prepared by Technical Committee ISO/TC 61 "Plastics"
in collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by
NBN.
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 January 2020, and conflicting national standards shall
be withdrawn at the latest by January 2020.
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 13468-1:1996.
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 13468-1:2019 has been approved by CEN as EN ISO 13468-1:2019 without any
modification.
INTERNATIONAL ISO
STANDARD 13468-1
Second edition
2019-06
Plastics — Determination of the
total luminous transmittance of
transparent materials —
Part 1:
Single-beam instrument
Plastiques — Détermination du facteur de transmission du flux
lumineux total des matériaux transparents —
Partie 1: Instrument à faisceau unique
Reference number
ISO 13468-1:2019(E)
©
ISO 2019
ISO 13468-1:2019(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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 13468-1:2019(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Apparatus . 2
5 Test specimens. 4
6 Conditioning . 4
7 Procedure. 4
8 Expression of results . 4
9 Precision . 5
10 Test report . 5
Annex A (informative) Use of a compensation port to increase the efficiency of an
integrating sphere . . 7
Bibliography . 9
ISO 13468-1:2019(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 61, Plastics, Subcommittee SC 5, Physical-
chemical properties.
This second edition cancels and replaces the first edition (ISO 13468-1:1996), of which it constitutes a
minor revision. The changes compared to the previous edition are as follows:
— the format of figures has been revised;
— the normative references have been revised;
— editorial changes have been applied.
A list of all parts in the ISO 13468 series can be found on the ISO website.
iv © ISO 2019 – All rights reserved

INTERNATIONAL STANDARD ISO 13468-1:2019(E)
Plastics — Determination of the total luminous
transmittance of transparent materials —
Part 1:
Single-beam instrument
1 Scope
This document covers the determination of the total luminous transmittance, in the visible region of the
spectrum, of planar transparent and substantially colourless plastics, using a single-beam photometer
with a specified CIE Standard light source and photodetector. This document cannot be used for plastics
which contain fluorescent materials.
This document is applicable to transparent moulding materials, films and sheets not exceeding 10 mm
in thickness.
NOTE 1 Total luminous transmittance can also be determined by a double-beam spectrophotometer as in
ISO 13468-2. This document, however, provides a simple but precise, practical and quick determination. This
method is suitable for use not only for analytical purposes but also for quality control.
NOTE 2 Substantially colourless plastics include those which are faintly tinted.
NOTE 3 Specimens more than 10 mm thick can be measured provided the instrument can accommodate them,
but the results might not be comparable with those obtained using specimens less than 10 mm thick.
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 291, Plastics — Standard atmospheres for conditioning and testing
ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
ISO 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method
for the determination of repeatability and reproducibility of a standard measurement method
ISO 5725-3, Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate
measures of the precision of a standard measurement method
ISO 11664-1, Colorimetry — Part 1: CIE standard colorimetric observers
ISO 11664-2, Colorimetry — Part 2: CIE standard illuminants
CIE Publication No. 15, Colorimetry
1)
CIE Publication No. 17, CIE International lighting vocabulary
1) Also published as IEC 60050-845.
ISO 13468-1:2019(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in CIE Publication No. 17 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia:
...