Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings

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 SI units are the standard. The values given in parentheses are provided for information purposes only.
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 and health practices and determine the applicability of regulatory limitations prior to use.

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Historical
Publication Date
09-Feb-2000
Current Stage
Ref Project

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ASTM E2073-00 - Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
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Designation: E 2073 – 00
Standard Test Method for
Photopic Luminance of Photoluminescent (Phosphorescent)
1
Markings
This standard is issued under the fixed designation E 2073; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope marking, use an illuminance meter calibrated to measure
illuminance in lux (fc), with the following features: spectral
1.1 This test method covers a procedure for determining the
error, f 8, # 5 %; UV response, u, # 0.5 %; resolution 1.0 lux;
1
photopic luminance of photoluminescent (phosphorescent)
and linearity error, f , # 0.5 % (see Public. CIE No. 69).
3
markings. It does not cover scotopic or mesopic measurements.
5.2 Luminance Meter—To measure the photopic luminance
1.2 When reference is made regarding photoluminescence
of photoluminescent markings, use a luminance meter with the
in the text of this test method, it implies phosphorescence.
following minimum features (see Publication CIE No. 69):
1.3 The values stated in SI units are the standard. The values
spectral error, f 8, # 5 %; UV response, u, # 0.5 %; resolution
1
given in parentheses are provided for information purposes
2
at least 0.1 mcd/m ; linearity error, f , # 0.5 %; signal-to-
3
only.
noise-ratio: at least 10:1 for all measurements. The instrument
1.4 This standard does not purport to address all of the
shall have been calibrated within the preceding 12 months
safety concerns, if any, associated with its use. It is the
using photometric standards traceable to a national standards
responsibility of the user of this standard to establish appro-
institute.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
6. Sampling, Test Specimens and Test Units
2. Referenced Documents 6.1 Method of Sampling—Take a minimum of three
samples. Each sample shall be of a minimum size of at least 45
2.1 ASTM Standards:
3
2
mm (1 ⁄4 in.) in diameter. Select samples at random. If a
E 284 Terminology of Appearance
3 manufacturer, samples shall be representative of the production
E 1316 Terminology for Non-Destructive Examinations
lot, coded and identified to correspond to production batch
E 2072 Specification for Photoluminescent (Phosphores-
2
codes, and shall be numbered consecutively. Paints shall be
cent) Safety Markings
applied in compliance with the manufacturer’s application
2.2 Other Standards:
4
instructions.
Publication CIE No. 69 (1987)
7. Conditioning
3. Terminology
7.1 Precondition all test specimens by placing them in
3.1 Definitions of terms in Terminology E 284 and Termi-
complete darkness for 48 h and remove them immediately
nology E 1316 are applicable to this specification.
before performing the tests. No ambient or stray light shall be
4. Significance and Use present.
4.1 To assess how photoluminescent markings perform
8. Procedure
under identical test conditions, the luminance shall be mea-
8.1 Ambient Conditions—The ambient temperature during
sured in accordance with this test method (see Specification
darkness preconditioning of specimens, activation and lumi-
E 2072).
nance testing shall be 25 6 3°C (77 6 5°F). The relative
5. Apparatus
humidity shall not exceed 60 %. All luminance testing shall be
performed in a room whose ambient light level is such that the
5.1 Illuminance Meter—To measure the illumination of the
luminance of a white diffuse reflectance standard is at least one
activating light source on the surface of the photoluminescent
decade lower than the lowest test specimen luminance mea-
1 surement to be recorded.
This test method is under the jurisdiction of ASTM Committee E 12 on Color
8.2 Preparation of Apparatus—The luminance meter shall
and Appearance, and is the direct responsibility of Subcommittee E12.13 on
Photoluminescent Safety Markings.
be zeroed prior to every measurement, then checked immedi-
Current edition approved Feb. 10, 2000. Published April 2000.
ately after the measurement and the measurement shall be
2
Annual Book of ASTM Standards, Vol 06.01.
3
rejected if the zero drifted by more than 5 % of the measured
Annual Book of ASTM Standards, Vol 03.03.
4
Available from the CIE-USNC Publications Office, c/o TLA Lighting Consult-
value. The distance between the luminance meter and the
ants, 7 Pond St., Salem, MA 01970.
Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
1

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ASTM-E2073
ADOPTION NOTICE
ASTM-E2073, "Test Method For Photopic Luminance of
Photoluminescent (Phosphorescent) Markings", was adopted on
16-OCT-00 for use by the Department of Defense (DoD). Proposed
changes by DoD activities must be submitted to the DoD Adopting
Activity: Commander, Defense Supply Center Philadelph
...

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