Astm E 1477 – 98a (Reapproved 2003) pdf free download

Standard Test Method for
Luminous Reflectance Factor of Acoustical Materials by Use
of Integrating-Sphere Reflectometers1

This standard is issued under the fixed designation E 1477; 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.