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 ph
ASTM
Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
STD-72562
2009
2009-07-01
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