Graphical symbols. Safety colours and safety signs - Measurement of photopic luminance of phosphorescent components used in a natural disaster safety way guidance system

Graphical symbols. Safety colours and safety signs - Measurement of photopic luminance of phosphorescent components used in a natural disaster safety way guidance system

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1   Scope

This document specifies the laboratory test method for the measurement of photopic luminance of phosphorescent materials classified in accordance with ISO 22578.