SIST EN ISO 16474-3:2014
(Main)Paints and varnishes - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 16474-3:2013)
Paints and varnishes - Methods of exposure to laboratory light sources - Part 3: Fluorescent UV lamps (ISO 16474-3:2013)
This part of ISO 16474 specifies methods for exposing coatings to fluorescent UV lamps, heat and water in apparatus designed to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight, or to daylight through window glass. The coatings are exposed to different types of fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp may be used to meet all the requirements for testing different materials. Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials. General guidance is given in ISO 16474-1.
Beschichtungsstoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 3: UV-Fluoreszenzlampen (ISO 16474-3:2013)
Dieser Teil von ISO 16474 legt Verfahren zum Beanspruchen von Beschichtungen mit fluoreszierender UVStrahlung, Wärme und Wasser fest, um mit dafür entwickelten Geräten die Einflüsse der Bewitterung zu reproduzieren, die auftreten, wenn Materialien im Endgebrauch in den vorhandenen Umgebungen durch Tageslicht oder durch Fensterglas gefiltertes Tageslicht beansprucht werden. Die Beschichtungen werden mit UV-Leuchtstofflampen unter geregelten Umweltbedingungen (Temperatur, Luftfeuchte und/oder Wasser) beansprucht. Verschiedene Typen von UV-Leuchtstofflampen können angewendet werden, um alle Anforderungen zu erfüllen, die bei der Prüfung verschiedener Materialien gestellt werden. Die Herstellung der Probenplatten und die Bewertung der Ergebnisse werden in anderen Internationalen
Normen für spezielle Materialien behandelt. Eine allgemeine Anleitung wird in ISO 16474-1 gegeben. ANMERKUNG Die Beanspruchung von Kunststoffen mit fluoreszierenden UV-Lampen wird in ISO 4892-3 beschrieben.
Peintures et vernis - Méthodes d'exposition à des sources lumineuses de laboratoire - Partie 3: Lampes fluorescentes UV (ISO 16474-3:2013)
L'ISO 16474-3:2013 spécifie des méthodes d'exposition de feuils à des lampes fluorescentes UV, en présence de chaleur et d'eau dans des appareils conçus pour reproduire les effets du vieillissement qui se produisent lorsque des matériaux sont exposés, dans les environnements d'utilisation finale réels, à la lumière du jour ou à la lumière du jour filtrée à travers un vitrage de fenêtre.
Les feuils sont exposés à différents types de lampes fluorescentes UV dans des conditions environnementales maîtrisées (température, humidité et/ou eau). Différents types de lampes fluorescentes UV peuvent être utilisés pour répondre à toutes les exigences relatives aux essais de différents matériaux.
La préparation des éprouvettes et l'évaluation des résultats sont traitées dans d'autres Normes internationales concernant les matériaux spécifiques.
Des lignes directrices générales sont données dans l'ISO 16474‑1.
L'exposition des matières plastiques aux lampes fluorescentes UV est décrite dans l'ISO 4892‑3.
Barve in laki - Metode izpostavljanja laboratorijskim virom svetlobe - 3. del: Fluorescentne UV-svetilke (ISO 16474-3:2013)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 16474-3:2014
01-februar-2014
1DGRPHãþD
SIST EN ISO 11341:2005
SIST EN ISO 11507:2007
Barve in laki - Metode izpostavljanja laboratorijskim virom svetlobe - 3. del:
Fluorescentne UV-svetilke (ISO 16474-3:2013)
Paints and varnishes - Methods of exposure to laboratory light sources - Part 3:
Fluorescent UV lamps (ISO 16474-3:2013)
Beschichtungsstoffe - Künstliches Bestrahlen oder Bewittern in Geräten - Teil 3: UV-
Fluoreszenzlampen (ISO 16474-3:2013)
Peintures et vernis - Méthodes d'exposition à des sources lumineuses de laboratoire -
Partie 3: Lampes fluorescentes UV (ISO 16474-3:2013)
Ta slovenski standard je istoveten z: EN ISO 16474-3:2013
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 16474-3:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 16474-3:2014
---------------------- Page: 2 ----------------------
SIST EN ISO 16474-3:2014
EUROPEAN STANDARD
EN ISO 16474-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2013
ICS 87.040 Supersedes EN ISO 11507:2007
English Version
Paints and varnishes - Methods of exposure to laboratory light
sources - Part 3: Fluorescent UV lamps (ISO 16474-3:2013)
Peintures et vernis - Méthodes d'exposition à des sources Beschichtungsstoffe - Künstliches Bestrahlen oder
lumineuses de laboratoire - Partie 3: Lampes fluorescentes Bewittern in Geräten - Teil 3: UV-Fluoreszenzlampen (ISO
UV (ISO 16474-3:2013) 16474-3:2013)
This European Standard was approved by CEN on 26 October 2013.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16474-3:2013 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 16474-3:2014
EN ISO 16474-3:2013 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 16474-3:2014
EN ISO 16474-3:2013 (E)
Foreword
This document (EN ISO 16474-3:2013) has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes" in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of
which is held by DIN.
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 May 2014, and conflicting national standards shall be withdrawn at the
latest by May 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 11507:2007.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 16474-3:2013 has been approved by CEN as EN ISO 16474-3:2013 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 16474-3:2014
---------------------- Page: 6 ----------------------
SIST EN ISO 16474-3:2014
INTERNATIONAL ISO
STANDARD 16474-3
First edition
2013-11-15
Paints and varnishes — Methods of
exposure to laboratory light sources —
Part 3:
Fluorescent UV lamps
Peintures et vernis — Méthodes d’exposition à des sources lumineuses
de laboratoire —
Partie 3: Lampes fluorescentes UV
Reference number
ISO 16474-3:2013(E)
©
ISO 2013
---------------------- Page: 7 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, 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
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 3
5.1 Laboratory light source . 3
5.2 Test chamber . 6
5.3 Radiometer . 6
5.4 Black-standard/black-panel thermometer . 6
5.5 Wetting and humidity . 7
5.6 Specimen holders . 7
5.7 Apparatus to assess changes in properties . 7
6 Test specimens (panels) . 7
6.1 General . 7
6.2 Preparation and coating . . 8
6.3 Drying and conditioning . 8
6.4 Thickness of coating . 8
6.5 Number of test panels . 8
7 Test conditions . 8
7.1 Radiation . 8
7.2 Temperature . 8
7.3 Relative humidity of chamber air . 9
7.4 Condensation and spray cycles . 9
7.5 Complex cycles with dark periods . 9
7.6 Sets of exposure conditions . 9
8 Procedure and mounting of the test specimens .10
8.1 General .10
8.2 Exposure .10
8.3 Measurement of radiant exposure .11
8.4 Determination of changes in properties after exposure .11
9 Test report .11
Annex A (informative) Spectral distribution of radiation for typical fluorescent UV lamps .12
Bibliography .16
© ISO 2013 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(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. 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. 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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9,
General test methods for paints and varnishes.
This first edition of ISO 16474-3, together with ISO 16474-1 cancels and replaces ISO 11507:2007, which
has been technically revised.
ISO 16474 consists of the following parts, under the general title Paints and varnishes — Methods of
exposure to laboratory light sources:
— Part 1: General guidance
— Part 2: Xenon-arc lamps
— Part 3: Fluorescent UV lamps
— Part 4: Open-flame carbon-arc lamps
iv © ISO 2013 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
Introduction
Coatings of paints, varnishes and similar materials (subsequently referred to simply as coatings) are
exposed to laboratory light sources, in order to simulate in the laboratory the ageing processes which
occur during natural weathering or behind window glass.
© ISO 2013 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 16474-3:2014
---------------------- Page: 12 ----------------------
SIST EN ISO 16474-3:2014
INTERNATIONAL STANDARD ISO 16474-3:2013(E)
Paints and varnishes — Methods of exposure to laboratory
light sources —
Part 3:
Fluorescent UV lamps
1 Scope
This part of ISO 16474 specifies methods for exposing coatings to fluorescent UV lamps, heat and water
in apparatus designed to reproduce the weathering effects that occur when materials are exposed in
actual end-use environments to daylight, or to daylight through window glass.
The coatings are exposed to different types of fluorescent UV lamps under controlled environmental
conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp may be used
to meet all the requirements for testing different materials.
Specimen preparation and evaluation of the results are covered in other ISO documents for specific materials.
General guidance is given in ISO 16474-1.
NOTE Fluorescent UV lamp exposures for plastics are described in ISO 4892-3.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 1514, Paints and varnishes — Standard panels for testing
ISO 2808, Paints and varnishes — Determination of film thickness
ISO 4618, Paints and varnishes — Terms and definitions
ISO 9370, Plastics — Instrumental determination of radiant exposure in weathering tests — General
guidance and basic test method
ISO 16474-1, Paints and varnishes — Methods of exposure to laboratory light sources — Part 1: General guidance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.
3.1
radiant exposure
H
amount of radiant energy to which a test panel has been exposed
Note 1 to entry: Radiant exposure is given by the equation HE=⋅dt
∫
© ISO 2013 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
where
H is the radiant exposure, in joules per square metre;
E is the irradiance, in watts per square metre;
t is the exposure time, in seconds
Note 2 to entry: If the irradiance E is constant throughout the whole exposure time, the radiant exposure H is
given simply by the product of E and t.
4 Principle
4.1 Fluorescent UV lamps, when properly maintained, can be used to simulate the spectral irradiance
of daylight in the ultraviolet (UV) region of the spectrum.
4.2 Specimens are exposed to various levels of UV radiation, heat and moisture (see 4.4) under
controlled environmental conditions.
4.3 The exposure conditions may be varied by selection of:
a) the type of fluorescent lamp (spectral power distribution);
b) the irradiance level;
c) the temperature during the UV exposure;
d) the relative humidity of the chamber air during the light and dark exposures, when test conditions
requiring control of humidity are used;
NOTE Commercial fluorescent UV lamp devices mostly do not provide means of relative humidity control.
e) the type of wetting (see 4.4);
f) the wetting temperature and cycle;
g) the timing of the UV/dark cycle.
4.4 Wetting is usually produced by condensation of water vapour onto the exposed specimen surface
or by spraying the test specimens with demineralized/deionized water.
4.5 The procedure(s) may include measurement of the irradiance and the radiant exposure in the plane
of the specimen.
4.6 It is recommended that a similar material of known performance (a control) be exposed
simultaneously with the test specimens to provide a standard for comparative purposes.
4.7 Intercomparison of results obtained from specimens exposed in different apparatus or to different
types of lamp should not be made unless an appropriate statistical relationship has been established
between the different types of equipment for the material to be tested.
2 © ISO 2013 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
5 Apparatus
5.1 Laboratory light source
5.1.1 Fluorescent UV lamps are fluorescent lamps in which radiant emission in the ultraviolet region of
the spectrum, i.e. below 400 nm, makes up at least 80 % of the total light output. There are three types of
fluorescent UV lamp used in this part of ISO 16474:
— Type 1A (UVA-340) fluorescent UV lamp: These lamps have a radiant emission below 300 nm of
less than 1 % of the total light output, have an emission peak at 343 nm, and are more commonly
identified as UVA-340 for simulation of daylight from 300 nm to 340 nm (see Table 1, column A.1).
Figure A.1 is a graph of spectral irradiance from 250 nm to 400 nm of a typical type 1A (UVA-340)
fluorescent lamp compared to daylight.
— Type 1B (UVA-351) fluorescent UV lamp: These lamps have a radiant emission below 310 nm of
less than 1 % of the total light output, have a peak emission at 353 nm, and are more commonly
identified as UVA-351 for simulation of the UV portion of daylight behind window glass (see Table 2).
Figure A.2 is a graph of spectral irradiance from 250 nm to 400 nm of a typical type 1B (UVA-351)
fluorescent UV lamp compared to daylight filtered by window glass.
— Type 2 (UVB-313) fluorescent UV lamp: These lamps are more commonly identified as UVB-313
and have a radiant emission below 300 nm that is more than 10 % of the total output and a peak
emission at 313 nm (see Table 3). Figure A.3 is a graph of the spectral irradiance from 250 nm to
400 nm of two typical type 2 (UVB-313) fluorescent lamps compared to daylight. Type 2 (UVB-313)
lamps may be used only by agreement between the parties concerned. Such agreement shall be
stated in the test report.
NOTE 1 Type 2 (UVB-313) lamps have a spectral distribution of radiation which peaks near the 313 nm
mercury line and might emit radiation down to λ = 254 nm, which can initiate ageing processes that never occur
in end-use environments.
NOTE 2 The solar spectral irradiance for a number of different atmospheric conditions is described in CIE No.
[2]
85. The benchmark daylight used in this part of ISO 16474 is from CIE No. 85:1989, Table 4.
5.1.2 Unless otherwise specified, type 1A (UVA-340) fluorescent UV lamps or corresponding type 1A
fluorescent UV lamp combinations shall be used to simulate the UV part of daylight (see Table 4, method
A). Unless otherwise specified, type 1B (UVA-351) lamps shall be used to simulate the UV part of daylight
through window glass (see Table 4, method B).
5.1.3 Fluorescent lamps age significantly with extended use. If an automatic irradiance control system
is not used, follow the apparatus manufacturer’s instructions on the procedure necessary to maintain the
desired irradiance.
5.1.4 Irradiance uniformity shall be in accordance with the requirements specified in ISO 16474-1.
Requirements for periodic repositioning of specimens when irradiance within the exposure area is less
than 90 % of the peak irradiance are described in ISO 16474-1.
© ISO 2013 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
a, b
Table 1 — Relative ultraviolet spectral irradiance for type 1A lamps for daylight UV (method A)
c d,e c
Spectral pass-band Minimum CIE No. 85:1989, Table 4 Maximum
(λ = wavelength in nm) % % %
λ < 290 0 0,1
290 ≤ λ ≤ 320 5,9 5,4 9,3
320 < λ ≤ 360 60,9 38,2 65,5
360 < λ ≤ 400 26,5 56,4 32,8
a
This table gives the irradiance in the given passband, expressed as a percentage of the total irradiance between 290 nm
and 400 nm. To determine whether a specific type 1A (UVA-340) lamp meets the requirements of this table, the spectral
irradiance from 250 nm to 400 nm shall be measured. Typically, this is done in 2 nm increments. The total irradiance in each
passband is then summed and divided by the total irradiance between 290 nm and 400 nm.
b
The minimum and maximum limits for type 1A (UVA-340) lamps in this table are based on more than 60 spectral
[3]
irradiance measurements with type 1A (UVA-340) lamps from different production lots and of various ages. The spectral
irradiance data are for lamps within the ageing recommendations of the apparatus manufacturer. As more spectral
irradiance data become available, minor changes in the limits are possible. The minimum and maximum limits are at
least three sigma from the mean for all the measurements. The range of the relative irradiance of fluorescent UV lamp
combinations is determined by radiation measurements at about 50 locations within the exposure area recommended by
the apparatus manufacturer.
c
The minimum and maximum columns will not necessarily sum to 100 % because they represent the minima and
maxima for the measurement data used. For any individual spectral irradiance distribution, the percentages calculated
for the pass-bands in this table will sum to 100 %. For any individual type 1A (UVA-340) fluorescent lamp, the calculated
percentage in each pass-band shall fall within the minimum and maximum limits given. Test results can be expected to
differ between exposures using type 1A (UVA-340) lamps in which the spectral irradiance differs by as much as that allowed
by the tolerances. Contact the manufacturer of the fluorescent UV apparatus for specific spectral irradiance data for the
type 1A (UVA-340) lamp used.
d
The data from CIE No. 85:1989, Table 4, is the global solar irradiance on a horizontal surface for an air mass of 1,0, an
ozone column of 0,34 cm at STP, 1,42 cm of precipitable water vapour and a spectral optical depth of aerosol extinction of 0,1
at 500 nm. These data are provided for reference purposes only and are intended to serve as a target.
e For the solar spectrum represented by CIE No. 85:1989, Table 4, the UV irradiance (290 nm to 400 nm) is 11 % and the
visible irradiance (400 nm to 800 nm) is 89 %, expressed as a percentage of the total irradiance from 290 nm to 800 nm.
Because the primary emission of fluorescent UV lamps is concentrated in the 300 nm to 400 nm pass-band, there are limited
data available for the visible light emission of fluorescent UV lamps. The percentages of UV irradiance and visible irradiance
on specimens exposed in fluorescent UV apparatus might vary due to the number of specimens being exposed and their
reflectance properties.
4 © ISO 2013 – All rights reserved
---------------------- Page: 16 ----------------------
SIST EN ISO 16474-3:2014
ISO 16474-3:2013(E)
Table 2 — Relative ultraviolet spectral irradiance for type 1B (UVA 351) lamps for daylight
a, b
behind window glass (method B)
c c
Spectral pass-band Minimum CIE No. 85:1989, Table 4, Maximum
plus effect of window
d,e
glass
(λ = wavelength in nm) % % %
λ < 300 0 0,2
300 ≤ λ ≤ 320 1,1 ≤ 1 3,3
320 < λ ≤ 360 60,5 33,1 66,8
360 < λ ≤ 400 30,0 66,0 38,0
a
This table gives the irradiance in the given pass-band, expressed as a percentage of the total irradiance between
290 nm and 400 nm. To determine whether a specific type 1B (UVA-351) lamp meets the requirements of this table, the
spectral irradiance from 250 nm to 400 nm shall be measured. Typically, this is done in 2 nm increments. The total irradiance
in each pass-band is then summed and divided by the total irradiance between 290 nm and 400 nm.
b
The minimum and maximum limits given in this table are based on 21 spectral irradiance measurements with
[3]
type 1B (UVA-351) lamps from different production lots and of various ages. The spectral irradiance data are for lamps
within the ageing recommendations of the apparatus manufacturer. As more spectral irradiance data become available,
minor changes in the limits are possible. The minimum and maximum limits are at least three sigma from the mean for all
the measurements.
c
The minimum and maximum columns will not necessarily sum to 100 % because they represent the minima and
maxima for the measurement data used. For any individual spectral irradiance distribution, the percentages calculated
for the pass-bands in this table will sum to 100 %. For any individual type 1B (UVA-351) fluorescent lamp, the calculated
percentage in each pass-band shall fall within the minimum and maximum limits given. Test results can be expected to
differ between exposures using type 1B (UVA-351) lamps in which the spectral irradiance differs by as much as that allowed
by the tolerances. Contact the manufacturer of the fluorescent UV apparatus for specific spectral irradiance data for the
type 1B (UVA-351) lamp used.
d
The data from CIE No. 85:1989, Table 4, plus the effect of window glass was determined by multiplying the CIE
No. 85:1989, Table 4 data by the spectral transmittance of typical 3-mm-thick window glass (see ISO 16474-2, Annex A).
These data are provided for reference purposes only and are intended to serve as a target.
e
For the solar spectrum represented by CIE No. 85:1989, Table 4, plus window glass data, the UV irradiance from
300 nm to 400 nm is typically about 9 % and the visible irradiance (400 nm to 800 nm) is typically about 91 %, expressed
as a percentage of the total irradiance from 300 nm to 800 nm. Because the primary emission of fluorescent UV lamps is
concentrated in the 300 nm to 400 nm passband, there are limited data available for the visible light emission of fluorescent
UV lamps. The percentages of UV irradiance and visible irradiance on specimens exposed in fluorescent UV apparatu
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.