D7897-18 : standard practice for laboratory soiling and weathering of roofing materials to simulate effects of natural exposure on solar reflectance and thermal emittance
ASTM International
D7897-18 : standard practice for laboratory soiling and weathering of roofing materials to simulate effects of natural exposure on solar reflectance and thermal emittance - United State ASTM International 2020 - pdf. file
NB0363 / ASTM
D7897-18 : standard practice for laboratory soiling and weathering of roofing materials to simulate effects of natural exposure on solar reflectance and thermal emittance - United State ASTM International 2020 - pdf. file
NB0363 / ASTM