Plastics - Determination of the total luminous transmittance of transparent materials - Part 2: Double-beam instrument (ISO 13468-2:2021)

MINOR REVISION

Kunststoffe - Bestimmung des totalen Lichttransmissionsgrades von transparenten Materialien - Teil 2: Zweistrahlinstrument (ISO 13468-2:2021)

Dieses Dokument behandelt die Bestimmung des totalen Lichttransmissionsgrades von ebenen, transparenten Kunststoffen und im Wesentlichen farblosen Kunststoffen im sichtbaren Spektralbereich mit einem abtastenden Zweistrahlspektralphotometer. Dieses Dokument kann nicht auf Kunststoffe mit fluoreszierenden Bestandteilen angewendet werden.
Dieses Dokument gilt für transparente Formmassen, Folien und Tafeln mit einer Dicke bis einschließlich 10 mm.
ANMERKUNG 1   Der totale Lichttransmissionsgrad kann auch mit einem Einstrahlinstrument wie in ISO 13468 1 bestimmt werden.
ANMERKUNG 2   Zu den im Wesentlichen farblosen Kunststoffen gehören die schwach eingefärbten.
ANMERKUNG 3   Probekörper dicker als 10 mm können gemessen werden, vorausgesetzt, das Instrument kann sie aufnehmen, jedoch können die Ergebnisse mit denen, die mit Probekörpern einer Dicke bis zu 10 mm erhalten wurden, nicht vergleichbar sein.

Plastiques - Détermination du facteur de transmission du flux lumineux total des matériaux transparents - Partie 2: Instrument à double faisceau (ISO 13468-2:2021)

Polimerni materiali - Ugotavljanje celotne prepustnosti svetlobe prozornih materialov - 2. del: Instrument z dvojnim žarkom (ISO 13468-2:2021)

General Information

Status
Published
Public Enquiry End Date
21-Apr-2021
Publication Date
20-Jul-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Jun-2021
Due Date
29-Aug-2021
Completion Date
21-Jul-2021

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SLOVENSKI STANDARD
SIST EN ISO 13468-2:2021
01-september-2021
Nadomešča:
SIST EN ISO 13468-2:2006
Polimerni materiali - Ugotavljanje celotne prepustnosti svetlobe prozornih
materialov - 2. del: Instrument z dvojnim žarkom (ISO 13468-2:2021)

Plastics - Determination of the total luminous transmittance of transparent materials -

Part 2: Double-beam instrument (ISO 13468-2:2021)
Kunststoffe - Bestimmung des totalen Lichttransmissionsgrades von transparenten
Materialien - Teil 2: Zweistrahlinstrument (ISO 13468-2:2021)
Plastiques - Détermination du facteur de transmission du flux lumineux total des

matériaux transparents - Partie 2: Instrument à double faisceau (ISO 13468-2:2021)

Ta slovenski standard je istoveten z: EN ISO 13468-2:2021
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 13468-2:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
SIST EN ISO 13468-2:2021
---------------------- Page: 2 ----------------------
SIST EN ISO 13468-2:2021
EN ISO 13468-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 13468-2:2006
English Version
Plastics - Determination of the total luminous
transmittance of transparent materials - Part 2: Double-
beam instrument (ISO 13468-2:2021)

Plastiques - Détermination du facteur de transmission Kunststoffe - Bestimmung des totalen

du flux lumineux total des matériaux transparents - Lichttransmissionsgrades von transparenten

Partie 2: Instrument à double faisceau (ISO 13468- Materialien - Teil 2: Zweistrahlinstrument (ISO 13468-

2:2021) 2:2021)
This European Standard was approved by CEN on 23 May 2021.

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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13468-2:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 13468-2:2021
EN ISO 13468-2:2021 (E)
Contents Page

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

---------------------- Page: 4 ----------------------
SIST EN ISO 13468-2:2021
EN ISO 13468-2:2021 (E)
European foreword

This document (EN ISO 13468-2:2021) 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 December 2021, and conflicting national standards

shall be withdrawn at the latest by December 2021.

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 13468-2:2006.

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 13468-2:2021 has been approved by CEN as EN ISO 13468-2:2021 without any

modification.
---------------------- Page: 5 ----------------------
SIST EN ISO 13468-2:2021
---------------------- Page: 6 ----------------------
SIST EN ISO 13468-2:2021
INTERNATIONAL ISO
STANDARD 13468-2
Second edition
2021-06
Plastics — Determination of the
total luminous transmittance of
transparent materials —
Part 2:
Double-beam instrument
Plastiques — Détermination du facteur de transmission du flux
lumineux total des matériaux transparents —
Partie 2: Instrument à double faisceau
Reference number
ISO 13468-2:2021(E)
ISO 2021
---------------------- Page: 7 ----------------------
SIST EN ISO 13468-2:2021
ISO 13468-2:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 13468-2:2021
ISO 13468-2:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Apparatus ..................................................................................................................................................................................................................... 2

5 Test specimens........................................................................................................................................................................................................ 4

6 Conditioning .............................................................................................................................................................................................................. 5

7 Procedure..................................................................................................................................................................................................................... 5

8 Expression of results ........................................................................................................................................................................................ 6

9 Precision ....................................................................................................................................................................................................................... 6

10 Test report ................................................................................................................................................................................................................... 6

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2021 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 13468-2:2021
ISO 13468-2:2021(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 61, Plastics, Subcommittee SC 5, Physical-

chemical properties, in collaboration with the European Committee for Standardization (CEN) Technical

Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between

ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 13468-2:1999), of which it constitutes a

minor revision.
The changes compared to the previous edition are as follows:
— the normative references have been updated.
A list of all parts in the ISO 13468 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 2021 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 13468-2:2021
INTERNATIONAL STANDARD ISO 13468-2:2021(E)
Plastics — Determination of the total luminous
transmittance of transparent materials —
Part 2:
Double-beam instrument
1 Scope

This document covers the determination of the total luminous transmittance, in the visible region of

the spectrum, of planar transparent plastics and substantially colourless plastics, using a double-beam

scanning spectrophotometer. 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 single-beam instrument as in ISO 134

...

SLOVENSKI STANDARD
oSIST prEN ISO 13468-2:2021
01-april-2021
Polimerni materiali - Ugotavljanje celotne prepustnosti svetlobe prozornih
materialov - 2. del: Instrument z dvojnim žarkom (ISO/FDIS 13468-2:2021)

Plastics - Determination of the total luminous transmittance of transparent materials -

Part 2: Double-beam instrument (ISO/FDIS 13468-2:2021)
Kunststoffe - Bestimmung des totalen Lichttransmissionsgrades von transparenten
Materialien - Teil 2: Zweistrahlinstrument (ISO/FDIS 13468-2:2021)
Plastiques - Détermination du facteur de transmission du flux lumineux total des

matériaux transparents - Partie 2: Instrument à double faisceau (ISO/FDIS 13468-

2:2021)
Ta slovenski standard je istoveten z: prEN ISO 13468-2
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
oSIST prEN ISO 13468-2:2021 en,fr,de

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

---------------------- Page: 1 ----------------------
oSIST prEN ISO 13468-2:2021
---------------------- Page: 2 ----------------------
oSIST prEN ISO 13468-2:2021
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 13468-2
ISO/TC 61/SC 5
Plastics — Determination of the
Secretariat: DIN
total luminous transmittance of
Voting begins on:
2020-12-22 transparent materials —
Voting terminates on:
Part 2:
2021-03-16
Double-beam instrument
Plastiques — Détermination du facteur de transmission du flux
lumineux total des matériaux transparents —
Partie 2: Instrument à double faisceau
ISO/CEN PARALLEL PROCESSING
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 13468-2:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 3 ----------------------
oSIST prEN ISO 13468-2:2021
ISO/FDIS 13468-2:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST prEN ISO 13468-2:2021
ISO/FDIS 13468-2:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Apparatus ..................................................................................................................................................................................................................... 2

5 Test specimens........................................................................................................................................................................................................ 4

6 Conditioning .............................................................................................................................................................................................................. 5

7 Procedure..................................................................................................................................................................................................................... 5

8 Expression of results ........................................................................................................................................................................................ 6

9 Precision ....................................................................................................................................................................................................................... 6

10 Test report ................................................................................................................................................................................................................... 6

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2020 – All rights reserved iii
---------------------- Page: 5 ----------------------
oSIST prEN ISO 13468-2:2021
ISO/FDIS 13468-2:2020(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 61, Plastics, Subcommittee SC 5, Physical-

chemical properties, in collaboration with the European Committee for Standardization (CEN) Technical

Committee CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between

ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 13468-2:1999), of which it constitutes a

minor revision.
The changes compared to the previous edition are as follows:
— the normative references have been updated.
A list of all parts in the ISO 13468 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 2020 – All rights reserved
---------------------- Page: 6 ----------------------
oSIST prEN ISO 13468-2:2021
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 13468-2:2020(E)
Plastics — Determination of the total luminous
transmittance of transparent materials —
Part 2:
Double-beam instrument
1 Scope

This document covers the determination of the total luminous transmittance, in the visible region of

the spectrum, of planar transparent plastics and substantially colourless plastics, using a double-beam

scanning spectrophotometer. 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 single-beam instrument as in ISO 13468-1.

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 cannot 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
CIE Publication No 15, Colorimetry
CIE Publication No 17.4, International lighting vocabulary
3 Terms and definitions

For the purposes of this document, the terms and definitions given in CIE Publication No. 17.4 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: available at http:// www .electropedia .org/

1) Also published as IEC 50(845):1987, International electrotechnical vocabulary — Chapter 845: Lighting.

© ISO 2020 – All rights reserved 1
---------------------- Page: 7 ----------------------
oSIST prEN ISO 13468-2:2021
ISO/FDIS 13468-2:2020(E)
3.1
transparent plastic

plastics in which the transmission of light is essentially regular and which have a high transmittance

...

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