ASTM E903-96

    Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres (Withdrawn 2005)


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    1. Scope

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

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

    1.3 This test method is applicable to materials having both specular and diffuse optical properties. Except for transmitting sheet materials that are inhomogeneous, patterned, or corrugated, this test method is preferred over Test Method E1084.

    1.4 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers

    E424 Test Methods for Solar Energy Transmittance and Reflectance (Terrestrial) of Sheet Materials

    E490 Standard Solar Constant and Zero Air Mass Solar Spectral Irradiance Tables

    E772 Terminology of Solar Energy Conversion

    E971 Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation

    E1084 Test Method for Solar Transmittance (Terrestrial) of Sheet Materials Using Sunlight

    E1175 Test Method for Determining Solar or Photopic Reflectance, Transmittance, and Absorptance of Materials Using a Large Diameter Integrating Sphere

    E2554 Practice for Estimating and Monitoring the Uncertainty of Test Results of a Test Method in a Single Laboratory Using a Control Sample Program

    G173 Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37 Tilted Surface

    G197 Table for Reference Solar Spectral Distributions: Direct and Diffuse on 20 Tilted and Vertical Surfaces

    Other Documents

    NIST SP 250-69 Regular Spectral Transmittance Available on line at http://www.nist.gov/calibrations/upload/SP250-69.pdf


    ICS Code

    ICS Number Code 27.160 (Solar energy engineering)

    UNSPSC Code

    UNSPSC Code


    Referencing This Standard
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    DOI: 10.1520/E0903-96

    Citation Format

    ASTM E903-96, Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres (Withdrawn 2005), ASTM International, West Conshohocken, PA, 1996, www.astm.org

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