Historical

ASTM E1918-06

Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field


1.1 This test method covers the measurement of solar reflectance of various horizontal and low-sloped surfaces and materials in the field, using a pyranometer. The test method is intended for use when the sun angle to the normal from a surface is less than 45.


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ASTM International [astm]

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