10.20 Jul 10, 2026
ISO
ISO/TC 163/SC 1
International Standard
This standard defined the spectral directional emissivity and total hemispherical emissivity of opaque insulating materials at the temperature below 700℃, the wavelength changes from 0.4μm to 25μm and the solid angle changes from 0°to 85°in the normal direction by the surface of the specimen. This method specifies the testing principles, apparatus, specimen, steps, the processing of results and reports, using the energy-comparison method.
PROJECT
ISO/NP 26921
10.20
New project ballot initiated
Jul 10, 2026