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ASTM E903

2012 Edition, December 1, 2012

Complete Document

Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres

Includes all amendments and changes through Reinstatement Notice , December 1, 2012


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Product Details:

  • Revision: 2012 Edition, December 1, 2012
  • Published Date: December 1, 2012
  • Status: Active, Most Current
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 17
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This test method covers the measurement of spectral absorptance, reflectance, and transmittance of materials using spectrophotometers equipped with integrating spheres.

Methods of computing solar weighted properties from the measured spectral values are specified.

This test method is applicable to materials having both specular and diffuse optical properties.

This test method is applicable to material with applied optical coatings with special consideration for the impact on the textures of the material under test.

Transmitting sheet materials that are inhomogeneous, textured, patterned, or corrugated require special considerations with respect to the applicability of this test method. Test Method E1084 may be more appropriate to determine the bulk optical properties of textured or inhomogeneous materials.

For homogeneous materials this test method is preferred over Test Method E1084.

This test method refers to applications using standard reference solar spectral distributions but may be applied using alternative selected spectra as long as the source and details of the solar spectral distribution and weighting are reported.

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.