American Society for Testing and Materials

An American Society for Testing and Materials (ASTM): is ASTM is a member-based organization that develops a wide range of voluntary standards. It promulgates standard test methods, specifications, practices, classifications, and terminology in over 130 industrial segments. Two ASTM standards used in defining the performance of cool roofs are ASTM E 903-88, for testing solar absorptance, and ASTM E 408-71 (1990), for testing the solar emittance of materials.

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