ASTM E1477-98a

ASTM E1477-98a - 10.12.1998

1. Scope

1.1 This test method covers the measurement of the luminous reflectance factor of acoustical materials for use in predicting the levels of room illumination.

1.2 This standard does not purport to address all of the safety problems, 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.

2. Referenced Documents

E284-22	Standard Terminology of Appearance
E308-22	Standard Practice for Computing the Colors of Objects by Using the CIE System
E1264-23	Standard Classification for Acoustical Ceiling Products
E1331-15(2023)	Standard Test Method for Reflectance Factor and Color by Spectrophotometry Using Hemispherical Geometry
E1347-06(2020)	Standard Test Method for Color and Color-Difference Measurement by Tristimulus Colorimetry
E1345-98(2019)	Standard Practice for Reducing the Effect of Variability of Color Measurement by Use of Multiple Measurements
E1164-23	Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation