ET-100 Emissometer The ET-100 Emissometer is a cutting-edge instrument designed to measure directional reflectance across a wide spectral range of 1.5 to 21 μm. By analyzing these reflectance values, the ET-100 calculates both ... Inquire Price FAST RESPONSE Sold by: Surface Optics Corp Ships from: United States Specifications Wavelength Bands: 1000-1700 nm, 1700-2500, 3.0-4.0 um, 3.0-5.0 um, 4.0-5.0 um, 5.0- 10.5 um, 8.0-12.0 um, 10.5-21 um Angle Of Incidence (from Normal): 20 deg Accuracy: 0.03 (abs. refl. units) Repeatability: 0.005 units Beam Spot Size: 12.7 mm