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EN ISO 13468-2:2021

(Main)

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

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

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.

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 ist anzuwenden für transparente Formmassen, Folien und Tafeln, deren Dicke 10 mm nicht überschreitet.
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 kleiner als 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)

Le présent document la détermination du facteur de transmission lumineuse totale, dans le domaine visible, des plastiques plans transparents et pratiquement incolores, au moyen d'un spectrophotomètre à double faisceau. Le présent document ne peut pas être appliqué aux plastiques contenant des matériaux fluorescents.
Le présent document est applicable aux matériaux pour moulage ainsi qu'aux feuilles minces, feuilles continues et films d'épaisseur inférieure ou égale à 10 mm.
NOTE 1   Le facteur de transmission lumineuse totale peut également être déterminé au moyen d'un instrument à faisceau unique, comme dans l'ISO 13468‑1.
NOTE 2   Dans les plastiques pratiquement incolores sont également inclus les plastiques légèrement colorés.
NOTE 3   Les éprouvettes de plus de 10 mm d'épaisseur peuvent être soumises au mesurage si la structure de l'appareillage utilisé le permet, mais les résultats ne sont pas comparables à ceux que l'on obtient sur des éprouvettes de moins de 10 mm.

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

General Information

Status
Published
Publication Date
15-Jun-2021
Withdrawal Date
30-Dec-2021
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
16-Jun-2021
Completion Date
16-Jun-2021
Ref Project
SIST EN ISO 13468-2:2021 - Plastics - Determination of the total luminous transmittance of transparent materials - Part 2: Double-beam instrument (ISO 13468-2:2021)

Relations

Replaces
EN ISO 13468-2:2006 - Plastics - Determination of the total luminous transmittance of transparent materials - Part 2: Double-beam instrument (ISO 13468-2:1999)
Effective Date
23-Jun-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.

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SIST EN ISO 13468-2:2021

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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.

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SIST EN ISO 13468-2:2021
EN ISO 13468-2:2021 (E)
Contents Page
European foreword . 3

2

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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.


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