1.1 Fresnel-reflecting concentrators using the sun as source are utilized in the accelerated outdoor exposure testing of nonmetallic materials. 1.2 This practice covers a procedure for performing accelerated outdoor expos
ASTM
Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight
STD-74668
2010
2010-06-01
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