Utilizing cool mirror technology, Low-Temperature EMMA®/EMMAQUA® (LT-EMMA®/EMMAQUA) achieves cooler sample temperatures. Said technology, which offers high reflectance in UV and near visible wavelength ranges while attenuating reflectance in longer wavelength visible and IR portions of solar spectrum, is suited for such temperature-sensitive materials as vinyl siding and composite decking. Also, LT-EMMA/EMMAQUA is compliant with ASTM G90.