ASTM E2073-19a
(Test Method)Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
SIGNIFICANCE AND USE
4.1 To assess how photoluminescent markings perform under identical test conditions, the luminance shall be measured in accordance with this test method (see Specification E2072).
SCOPE
1.1 This test method covers a procedure for determining the photopic luminance of photoluminescent (phosphorescent) markings. It does not cover scotopic or mesopic measurements.
1.2 When reference is made regarding photoluminescence in the text of this test method, it implies phosphorescence.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E2073 − 19a An American National Standard
Standard Test Method for
Photopic Luminance of Photoluminescent (Phosphorescent)
1
Markings
This standard is issued under the fixed designation E2073; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 2.2 Other Standards:
Publication CIE No. 69 (1987) Methods of characterizing
1.1 This test method covers a procedure for determining the
illuminance meters and luminance meters; Performance,
photopic luminance of photoluminescent (phosphorescent)
3
characteristics and specifications
markings.Itdoesnotcoverscotopicormesopicmeasurements.
1.2 When reference is made regarding photoluminescence 3. Terminology
in the text of this test method, it implies phosphorescence.
3.1 Definitions of terms in Terminology E284 and Termi-
1.3 The values stated in inch-pound units are to be regarded nology E1316 are applicable to this specification.
as standard. The values given in parentheses are mathematical
4. Significance and Use
conversions to SI units that are provided for information only
and are not considered standard.
4.1 To assess how photoluminescent markings perform
under identical test conditions, the luminance shall be mea-
1.4 This standard does not purport to address all of the
sured in accordance with this test method (see Specification
safety concerns, if any, associated with its use. It is the
E2072).
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
5. Apparatus
mine the applicability of regulatory limitations prior to use.
5.1 Illuminance Meter—To measure the illumination of the
1.5 This international standard was developed in accor-
activating light source on the surface of the photoluminescent
dance with internationally recognized principles on standard-
marking, use an illuminance meter calibrated to measure
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- illuminance in fc (lux), with the following features: spectral
error, f ', ≤5 %; UV response, u, ≤0.5 %; resolution 1.0 lux;
mendations issued by the World Trade Organization Technical
1
Barriers to Trade (TBT) Committee. and linearity error, f , ≤0.5 % (see Publication CIE No. 69).
3
5.2 Luminance Meter—To measure the photopic luminance
2. Referenced Documents
of photoluminescent markings, use a luminance meter with the
2
2.1 ASTM Standards: following minimum features (see Publication CIE No. 69):
E284 Terminology of Appearance spectral error, f ', ≤5 %; UV response, u, ≤0.5 %; resolution at
1
2
E308 PracticeforComputingtheColorsofObjectsbyUsing least 0.1 mcd/m ; linearity error, f , ≤0.5 %; signal-to-noise-
3
ratio: at least 10:1 for all measurements. The instrument shall
the CIE System
E1316 Terminology for Nondestructive Examinations have been calibrated within the preceding 12 months using
photometric standards traceable to a national standards insti-
E2072 Specification for Photoluminescent (Phosphorescent)
Safety Markings tute.
6. Sampling, Test Specimens, and Test Units
1
This test method is under the jurisdiction of ASTM Committee E12 on Color 6.1 Method of Sampling—Take a minimum of three
and Appearance and is the direct responsibility of Subcommittee E12.13 on
samples. Each sample shall be of a minimum size of at least
Photoluminescent Safety Markings.
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1 ⁄4-in. (45-mm) in diameter. Select samples at random. If a
Current edition approved Nov. 1, 2019. Published November 2019. Originally
manufacturer,samplesshallberepresentativeoftheproduction
approved in 2000. Last previous edition approved in 2019 as E2073 – 19. DOI:
10.1520/E2073-19a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from U.S. National Committee of the CIE (International Commission
Standards volume information, refer to the standard’s Document Summary page on on Illumination), C/o Thomas M. Lemons, TLA-Lighting Consultants, Inc., 7 Pond
the ASTM website. St., Salem, MA 01970, http://www.cie-usnc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2073 − 19a
lot, coded and identified to correspon
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2073 − 19 E2073 − 19a An American National Standard
Standard Test Method for
Photopic Luminance of Photoluminescent (Phosphorescent)
1
Markings
This standard is issued under the fixed designation E2073; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers a procedure for determining the photopic luminance of photoluminescent (phosphorescent)
markings. It does not cover scotopic or mesopic measurements.
1.2 When reference is made regarding photoluminescence in the text of this test method, it implies phosphorescence.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E1316 Terminology for Nondestructive Examinations
E2072 Specification for Photoluminescent (Phosphorescent) Safety Markings
2.2 Other Standards:
Publication CIE No. 69 (1987) Methods of characterizing illuminance meters and luminance meters; Performance,
3
characteristics and specifications
3. Terminology
3.1 Definitions of terms in Terminology E284 and Terminology E1316 are applicable to this specification.
4. Significance and Use
4.1 To assess how photoluminescent markings perform under identical test conditions, the luminance shall be measured in
accordance with this test method (see Specification E2072).
5. Apparatus
5.1 Illuminance Meter—To measure the illumination of the activating light source on the surface of the photoluminescent
marking, use an illuminance meter calibrated to measure illuminance in fc (lux), with the following features: spectral error, f ',
1
≤5 %; UV response, u, ≤0.5 %; resolution 1.0 lux; and linearity error, f , ≤0.5 % (see Publication CIE No. 69).
3
1
This test method is under the jurisdiction of ASTM Committee E12 on Color and Appearance and is the direct responsibility of Subcommittee E12.13 on
Photoluminescent Safety Markings.
Current edition approved May 1, 2019Nov. 1, 2019. Published May 2019November 2019. Originally approved in 2000. Last previous edition approved in 20102019 as
E2073 – 10E2073 – 19. which was withdrawn January 2019 and reinstated in May 2019. DOI: 10.1520/E2073-19.DOI: 10.1520/E2073-19a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from U.S. National Committee of the CIE (International Commission on Illumination), C/o Thomas M. Lemons, TLA-Lighting Consultants, Inc., 7 Pond St.,
Salem, MA 01970, http://www.cie-usnc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E2073 − 19a
5.2 Luminance Meter—To measure the photopic luminance of photoluminescent markings, use a luminance meter with the
following minimum features (see Publication CIE No. 69): spectral error, f ', ≤5 %; UV response, u, ≤0.5 %; resolution at least
1
2
0.1 mcd/m ; linearity error, f , ≤0.5 %; signal-to-noise-ratio: at least 10:1 for all measurements. The instrument shall have been
3
calibrated within the preceding 12 months using photometric standards traceable to a national standards institute.
6. Sampling, Test Specimens, and Test Units
3
6.1 Method of
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