1.1This test method covers the measurement of solar transmittance (terrestrial) of materials in sheet form by using a pyranometer, an enclosure, and the sun as the energy source.

1.2This test method also allows measurement of solar transmittance at angles other than normal incidence.

1.3This test method is applicable to sheet materials that are transparent, translucent, textured, or patterned.

1.4This 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.