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ASTM E971-88(1996)e1

Historical Reaffirmation

Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation

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1.1 This practice describes the calculation of luminous (photometric) transmittance and reflectance of materials from spectral radiant transmittance and reflectance data obtained from Test Method E903.

1.2 Determination of luminous transmittance by this practice is preferred over measurement of photometric transmittance by methods using the sun as a source and a photometer as detector except for transmitting sheet materials that are inhomogeneous, patterned, or corrugated.

1.3 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 .


SDO ASTM: ASTM International
Document Number E971
Publication Date Jan. 1, 1996
Language en - English
Page Count 4
Revision Level 88(1996)e1
Supercedes
Committee E44.20
Publish Date Document Id Type View
Aug. 15, 2011 E0971-11 Revision
Oct. 1, 2019 E0971-11R19 Reaffirmation
Jan. 1, 1996 E0971-88R96E01 Reaffirmation
Aug. 26, 1988 E0971-88R03 Reaffirmation