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 totalen Lichttransmissionsgrades 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
Public Enquiry End Date
16-May-2019
Publication Date
11-Aug-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Jul-2019
Due Date
28-Sep-2019
Completion Date
12-Aug-2019

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SLOVENSKI STANDARD
SIST EN ISO 13468-1:2019
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
SIST EN ISO 13468-1:2019 en,fr,de

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

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SIST EN ISO 13468-1:2019
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SIST EN ISO 13468-1:2019
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.
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SIST EN ISO 13468-1:2019
EN ISO 13468-1:2019 (E)
Contents Page

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

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SIST EN ISO 13468-1:2019
EN ISO 13468-1:2019 (E)
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.
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SIST EN ISO 13468-1:2019
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SIST EN ISO 13468-1:2019
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
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SIST EN ISO 13468-1:2019
ISO 13468-1:2019(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 13468-1:2019
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 2019 – All rights reserved iii
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SIST EN ISO 13468-1:2019
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
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SIST EN ISO 13468-1:2019
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 conditionin
...

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