ASTM WK42571

    Revision of E903 - 12 Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres

    (What is a Work Item?)

    Active Standard: E903 - 12

    Developed by Subcommittee: E44.20 | Committee E44 | Contact Staff Manager


    1. Rationale

    E903 lists types of equipment that can be used to measure reflectance, but that list excludes certain optical configurations that are fully capable of performing the measurements. This revision is meant to make the standard more inclusive of the various legitimate methods of performing the measurement. To do this, well conduct an Inter-Laboratory Study that will both enable us to learn what level of performance users of the standard can expect and also portray to what extent alternative optical configurations can produce similar results.


    absorptance; diffuse; integrating sphere; reflectance; smooth; solar absorptance; solar reflectance; solar transmittance; spectral; spectrophotometer; specular; texture; transmittance;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Halden Field

    Draft Under Development