Textiles - Tests for colour fastness - Part B04: Colour fastness to artificial weathering: Xenon arc fading lamp test (ISO 105-B04:2024)

This document specifies a method intended for determining the effect on the colour of textiles of all kinds, except loose fibres, to the action of weather as determined by exposure to simulated weathering conditions in a test chamber equipped with a xenon arc lamp. This document focuses on textiles (such as apparel) where the main evaluation criterium is the colour fastness.
This method can be used to determine if a textile is sensitive to the combined effect of light and water.
NOTE 1        General information on colour fastness to light is given in Annex A.
NOTE 2        ISO 105-B10 provides guidance on testing textiles or technical textiles, which are permanently exposed to an outdoor environment and/or require mechanical testing (such as tensile strength determination).

Textilien - Farbechtheitsprüfungen - Teil B04: Farbechtheit gegen künstliche Bewitterung: Xenonbogenlichtprüfung (ISO 105-B04:2024)

Dieses Dokument legt ein Verfahren zur Bestimmung der Wirkung von Bewitterungseinflüssen auf die Farbe von Textilien aller Art, mit Ausnahme von losen Fasern, fest, die durch die Einwirkung künstlicher Bewitterungsbedingungen in einer mit einer Xenonbogenlampe ausgestatteten Prüfkammer bestimmt wird. Dieses Dokument betrifft Textilien (z. B. Bekleidung), bei denen das wichtigste Bewertungskriterium die Farbechtheit ist.
Mit diesem Verfahren kann festgestellt werden, ob ein Textil gegen die kombinierte Wirkung von Licht und Wasser empfindlich ist.
ANMERKUNG 1   Eine allgemeine Information zur Lichtechtheit ist in Anhang A enthalten.
ANMERKUNG 2   ISO 105 B10 enthält eine Anleitung zur Prüfung von Textilien oder technischen Textilien, die dauerhaft einer Außenumgebung ausgesetzt sind und/oder mechanische Prüfungen (z. B. Bestimmung der Zugfestigkeit) erfordern.

Textiles - Essais de solidité des coloris - Partie B04: Solidité des coloris aux intempéries artificielles: Lampe à arc au xénon (ISO 105-B04:2024)

Le présent document spécifie une méthode destinée à déterminer l’effet sur les coloris des textiles de toute nature, sauf sur les fibres en bourre, de l’action des intempéries par exposition à des conditions d’intempéries simulées dans une enceinte d’essai équipée d’une lampe à arc au xénon. Le présent document est axé sur les textiles (tels que les vêtements) pour lesquels le principal critère d’évaluation est la solidité des coloris.
La présente méthode peut être utilisée pour déterminer la sensibilité d’un textile à l’effet combiné de la lumière et de l’eau.
NOTE 1        Des informations générales sur la solidité des coloris à la lumière sont données à l’Annexe A.
NOTE 2        L’ISO 105-B10 fournit des recommandations relatives aux essais des textiles ou textiles techniques, qui sont exposés de façon permanente à un environnement extérieur et/ou qui exigent des essais mécaniques (détermination de la résistance à la traction, par exemple).

Tekstilije - Preskušanje barvne obstojnosti - Del B04: Obstojnost barve pri umetnih vremenskih vplivih: Preskus s pojemajočo obločno ksenonsko svetilko (ISO 105-B04:2024)

Ta del standarda ISO 105 določa metodo za določevanje barvne obstojnosti vseh vrst tekstilij, razen prostih vlaken, na vpliv vremena pri izpostavljenosti simuliranim vremenskim vplivom v omarici s pojemajočo obločno ksenonsko svetilko. Standard ISO 105-B04 se osredotoča na tekstilije (npr. oblačila), pri katerih je glavno merilo ocenjevanja obstojnost barve.
To metodo je mogoče uporabiti za ugotavljanje občutljivosti tekstilije na svetlobo v mokrih pogojih.
OPOMBA 1: Splošne informacije o barvni obstojnosti na svetlobo so podane v dodatku A.
OPOMBA 2: Tekstilije ali tehnične tekstilije, ki so stalno izpostavljene zunanjemu okolju in/ali pri katerih je potrebno mehansko preskušanje (npr. ugotavljanje natezne trdnosti), se lahko preskusijo v skladu s standardom ISO 105-B10.

General Information

Status
Published
Public Enquiry End Date
12-Jul-2023
Publication Date
22-Apr-2024
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
11-Apr-2024
Due Date
16-Jun-2024
Completion Date
23-Apr-2024

Relations

Effective Date
19-Jan-2023

Overview

EN ISO 105-B04:2024 - "Textiles - Tests for colour fastness - Part B04: Colour fastness to artificial weathering: Xenon arc fading lamp test" - is the 2024 CEN-endorsed edition of the ISO test method for evaluating how textile colours resist simulated weathering. The standard specifies a laboratory method using a xenon arc lamp to reproduce the combined effects of light and water on textile colour (except loose fibres). It is intended primarily for textiles (for example, apparel) where colour fastness is the main performance criterion.

Key topics and requirements

This standard defines the technical elements needed to carry out reproducible xenon-arc fading tests, including:

  • Principle of the xenon arc fading lamp test to simulate natural weathering (light + water).
  • Materials and references: use of blue wool references and specimen mounting cards; guidance on covers and specimen holders.
  • Apparatus: laboratory light source (xenon-arc lamp), test chamber, radiometer, and temperature sensors (including black-standard/panel thermometers).
  • Spectral irradiance and daylight filter options: Type I and Type II daylight filters are introduced to harmonize with current technology.
  • Exposure conditions and procedures: general exposure rules, specimen and reference placement, and controlled parameters for reproducible tests.
  • Exposure methods: three distinct methods are described for different test needs.
  • Assessment and reporting: evaluation of colour change using reference scales (e.g., grey scale) and required information for the test report.
  • Informative annexes: general information on colour fastness to light and radiometer guidance.

The document supersedes earlier editions and aligns the apparatus description with ISO 105-B10 to reflect up-to-date practice.

Practical applications and users

EN ISO 105-B04:2024 is used to:

  • Verify colour fastness of apparel, household textiles and other textile products exposed to light and moisture.
  • Support quality control, product development and comparative screening of dyes, finishes and fabric constructions.
  • Specify performance requirements in procurement and technical dossiers.

Typical users:

  • Textile R&D and dyeing laboratories
  • Quality assurance and compliance teams at mills and brands
  • Independent test houses and certification bodies
  • Product specifiers and standards writers

Related standards

  • ISO 105 series (Tests for colour fastness) - other parts cover related exposures and assessment methods.
  • ISO 105-B10 - guidance for textiles permanently exposed outdoors or requiring mechanical testing; referenced to differentiate test scope.

Keywords: EN ISO 105-B04:2024, colour fastness, xenon arc fading lamp test, artificial weathering, textiles testing, blue wool references, spectral irradiance, test chamber, ISO 105.

Standard

SIST EN ISO 105-B04:2024

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Frequently Asked Questions

SIST EN ISO 105-B04:2024 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Textiles - Tests for colour fastness - Part B04: Colour fastness to artificial weathering: Xenon arc fading lamp test (ISO 105-B04:2024)". This standard covers: This document specifies a method intended for determining the effect on the colour of textiles of all kinds, except loose fibres, to the action of weather as determined by exposure to simulated weathering conditions in a test chamber equipped with a xenon arc lamp. This document focuses on textiles (such as apparel) where the main evaluation criterium is the colour fastness. This method can be used to determine if a textile is sensitive to the combined effect of light and water. NOTE 1        General information on colour fastness to light is given in Annex A. NOTE 2        ISO 105-B10 provides guidance on testing textiles or technical textiles, which are permanently exposed to an outdoor environment and/or require mechanical testing (such as tensile strength determination).

This document specifies a method intended for determining the effect on the colour of textiles of all kinds, except loose fibres, to the action of weather as determined by exposure to simulated weathering conditions in a test chamber equipped with a xenon arc lamp. This document focuses on textiles (such as apparel) where the main evaluation criterium is the colour fastness. This method can be used to determine if a textile is sensitive to the combined effect of light and water. NOTE 1        General information on colour fastness to light is given in Annex A. NOTE 2        ISO 105-B10 provides guidance on testing textiles or technical textiles, which are permanently exposed to an outdoor environment and/or require mechanical testing (such as tensile strength determination).

SIST EN ISO 105-B04:2024 is classified under the following ICS (International Classification for Standards) categories: 59.080.01 - Textiles in general. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN ISO 105-B04:2024 has the following relationships with other standards: It is inter standard links to SIST EN ISO 105-B04:1999. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase SIST EN ISO 105-B04:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


SLOVENSKI STANDARD
01-junij-2024
Tekstilije - Preskušanje barvne obstojnosti - Del B04: Obstojnost barve pri
umetnih vremenskih vplivih: Preskus s pojemajočo obločno ksenonsko svetilko
(ISO 105-B04:2024)
Textiles - Tests for colour fastness - Part B04: Colour fastness to artificial weathering:
Xenon arc fading lamp test (ISO 105-B04:2024)
Textilien - Farbechtheitsprüfungen - Teil B04: Farbechtheit gegen künstliche
Bewitterung: Xenonbogenlichtprüfung (ISO 105-B04:2024)
Textiles - Essais de solidité des coloris - Partie B04: Solidité des coloris aux intempéries
artificielles: Lampe à arc au xénon (ISO 105-B04:2024)
Ta slovenski standard je istoveten z: EN ISO 105-B04:2024
ICS:
59.080.01 Tekstilije na splošno Textiles in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 105-B04
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 59.080.01 Supersedes EN ISO 105-B04:1997
English Version
Textiles - Tests for colour fastness - Part B04: Colour
fastness to artificial weathering: Xenon arc fading lamp
test (ISO 105-B04:2024)
Textiles - Essais de solidité des coloris - Partie B04: Textilien - Farbechtheitsprüfungen - Teil B04:
Solidité des coloris aux intempéries artificielles: Lampe Farbechtheit gegen künstliche Bewitterung:
à arc au xénon (ISO 105-B04:2024) Xenonbogenlichtprüfung (ISO 105-B04:2024)
This European Standard was approved by CEN on 1 March 2024.

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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 105-B04:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 105-B04:2024) has been prepared by Technical Committee ISO/TC 38
"Textiles" in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the
secretariat of which is held by BSI.
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 September 2024, and conflicting national standards
shall be withdrawn at the latest by September 2024.
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 105-B04:1997.
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 105-B04:2024 has been approved by CEN as EN ISO 105-B04:2024 without any
modification.
International
Standard
ISO 105-B04
Fifth edition
Textiles — Tests for colour
2024-03
fastness —
Part B04:
Colour fastness to artificial
weathering: Xenon arc fading
lamp test
Textiles — Essais de solidité des coloris —
Partie B04: Solidité des coloris aux intempéries artificielles :
Lampe à arc au xénon
Reference number
ISO 105-B04:2024(en) © ISO 2024

ISO 105-B04:2024(en)
© ISO 2024
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 105-B04:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Materials . 2
5.1 Blue wool references .2
5.2 Glass case for blue wool references.2
5.3 Specimen mounting cards .2
5.4 Specimen covers .2
5.5 Specimen holders .2
5.6 Grey scale for assessing change in colour .2
6 Apparatus . 3
6.1 Laboratory light source .3
6.1.1 General .3
6.1.2 Spectral irradiance .3
6.2 Test chamber .4
6.3 Radiometer .5
6.4 Temperature sensors .5
6.4.1 General .5
6.4.2 Chamber air temperature thermometer .5
6.4.3 Black-standard thermometer (BST) and black-panel thermometer (BPT) .5
7 Exposure conditions . 5
7.1 General .5
7.2 Exposure of test specimens .5
7.3 Exposure of colour fastness references .6
8 Test specimens . 6
9 Procedure . 6
9.1 General .6
9.2 Exposure methods .7
9.2.1 General .7
9.2.2 Method 1 .7
9.2.3 Method 2 .7
9.2.4 Method 3 .8
9.3 Drying .8
9.4 Mounting for assessment .8
10 Assessment of colour fastness to weathering . 8
11 Test report . 9
Annex A (informative) General information on colour fastness to light .10
Annex B (informative) Radiometer for controlling exposure duration .12
Bibliography .13

iii
ISO 105-B04:2024(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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 38, Textiles, Subcommittee SC 1, Tests for
coloured textiles and colorants, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 248, Textiles and textile products, in accordance with the Agreement on
technical cooperation between ISO and CEN (Vienna Agreement).
This fifth edition cancels and replaces the fourth edition (ISO 105-B04:1994), which has been technically
revised.
The main changes are as follows:
— the Scope has been refined to differentiate this document from ISO 105-B10;
— the description of the test apparatus has been harmonized with ISO 105-B10. This takes into account
current technology, but does not discredit the test procedure described in this document;
— Type I and Type II daylight filters for xenon-arc lamps have been introduced.
A list of all parts in the ISO 105 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 105-B04:2024(en)
Introduction
ISO 105 was previously published in thirteen “parts”, each designated by a letter (e.g. “Part A”), with
publication dates between 1978 and 1985. Each part contained a series of “sections”, each designated by the
respective part letter and by a two-digit serial number (e.g. “Section A01”). These sections are now being
republished as separate documents, themselves designated “parts” but retaining their earlier alphanumeric
designations.
v
International Standard ISO 105-B04:2024(en)
Textiles — Tests for colour fastness —
Part B04:
Colour fastness to artificial weathering: Xenon arc fading
lamp test
1 Scope
This document specifies a method intended for determining the effect on the colour of textiles of all kinds,
except loose fibres, to the action of weather as determined by exposure to simulated weathering conditions
in a test chamber equipped with a xenon arc lamp. This document focuses on textiles (such as apparel)
where the main evaluation criterium is the colour fastness.
This method can be used to determine if a textile is sensitive to the combined effect of light and water.
NOTE 1 General information on colour fastness to light is given in Annex A.
NOTE 2 ISO 105-B10 provides guidance on testing textiles or technical textiles, which are permanently exposed to
an outdoor environment and/or require mechanical testing (such as tensile strength determination).
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 105-A01, Textiles — Tests for colour fastness — Part A01: General principles of testing
ISO 105-A02, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour
ISO 105-A05, Textiles — Tests for colour fastness — Part A05: Instrumental assessment of change in colour for
determination of grey scale rating
ISO 105-B01, Textiles — Tests for colour fastness — Part B01: Colour fastness to light: Daylight
ISO 105-B02: 2014, Textiles — Tests for colour fastness — Part B02: Colour fastness to artificial light: Xenon arc
fading lamp test
ISO 105-B08, Textiles — Tests for colour fastness — Part B08: Quality control of blue wool reference materials 1 to 7
ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance
ISO 9370, Plastics — Instrumental determination of radiant exposure in weathering tests — General guidance
and basic test method
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 105-B02 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp

ISO 105-B04:2024(en)
— IEC Electropedia: available at https:// www .electropedia .org/
4 Principle
Test specimens of the textile are exposed under specified conditions to light from a xenon arc lamp and to
water spray. At the same time, eight dyed blue wool references are exposed to light but are protected from
water spray by a sheet of window glass. The fastness is assessed by comparing the change in colour of the
test specimen with that of the references.
If the method is used to determine if a textile is sensitive to the combined effect of light and water (see 7.2),
the simultaneous exposure of references is unnecessary. In this case, the assessment shall be performed by
comparison with the grey scale in accordance with ISO 105-A02 or by colour measurement in accordance
with ISO 105-A05.
5 Materials
5.1 Blue wool references
The reference materials used in this test shall be those blue wool references specified in ISO 105-A01 and
ISO 105-B01. The blue wool references 1 to 8 used in this test shall meet the quality requirements specified
in ISO 105-B08.
5.2 Glass case for blue wool references
The blue wool references shall be protected from water spray by a shield of glass. The transmission of the
glass used shall be at least 90 % in the wavelength range from 380 nm and 750 nm, falling to 0 % between
310 nm and 320 nm. The glass case shall be well ventilated, i.e. there shall be an opening at the top and
another at the bottom to allow good circulation of air.
5.3 Specimen mounting cards
For mounting the blue wool references, mounting cards from cardboard free of optical or fluorescent
brightening agent shall be used.
For exposure cycles with specimen wetting, specimen mounting cards shall be water resistant. Mounting
cards shall be made from material resistant to the exposure conditions, such as stainless steel or inert
plastic.
5.4 Specimen covers
Specimen covers to partly cover the front of the test specimens shall be made from opaque cardboard, or
other thin opaque material, for example stainless steel or thin sheet aluminium. The cover material shall be
inert to the test conditions and not react with the test specimen.
If specimen covers are used for the test specimen, these shall be water resistant.
5.5 Specimen holders
Specimen holders shall be used to hold the test specimen on the specimen mounting card and the specimen
covers, if used, during the exposure. Specimen holders shall be made of inert materials that will not affect
the test results. They are preferably made in the form of an open frame. If required, a metal plate can be
used to close the specimen holders from the rear.
5.6 Grey scale for assessing change in colour
Grey scale for assessing change in colour shall be in accordance with ISO 105-A02.

ISO 105-B04:2024(en)
6 Apparatus
6.1 Laboratory light source
6.1.1 General
The light source shall be one or more quartz-jacketed xenon-arc lamps, which emit radiation from about
270 nm in the ultraviolet through the visible spectrum and into the infrared. In order to simulate global
[1]
solar radiation at the earth’s surface as described in CIE 241 , CIE-H1, so-called daylight filters shall be
used to remove short wavelength UV radiation shorter than 290 nm. In addition, filters to remove infrared
radiation may be used to prevent unrealistic heating of test specimens that can cause thermal degradation
not experienced during outdoor exposures.
Solar spectral irradiance for a number of different atmospheric conditions is described in CIE 241. Like other
International Standards, this document uses CIE 241 as a benchmark for solar spectral irradiance.
The xenon-arc light source may be either air-cooled or water-cooled. The size, form and number of xenon-arc
lamps depend on the type of apparatus. When available, an irradiance-controlled light source should be used.
The variation in irradiance over the area covered by the test specimens shall not exceed ±10 % of the mean.
If this cannot be achieved, test specimens shall be periodically repositioned to provide equivalent exposure
periods in each location. Periodic repositioning of the test specimens in the test chamber is recommended to
ensure the most consistent results.
The characteristics of xenon-arc lamps and filters are subject to change during use due to ageing, and
lamps and filters shall be replaced at suitable intervals. Furthermore, they are subject to change due to
the accumulation of dirt and shall therefore be cleaned at suitable intervals. Follow the manufacturer’s
recommendations for replacement and cleaning of lamps and filters.
6.1.2 Spectral irradiance
[1]
Optical filters are used to reduce the xenon-arc emission in order to simulate daylight (CIE 241, CIE-H1 ).
The minimum and maximum levels for the relative spectral irradiance in the UV wavelength range of
radiation are given in Table 1.
Table 1 allows a range of different spectr
...

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