SSR-ER for solar spectral reflectance measurements of the sample, using a tungsten lamp and integrating sphere to produce diffuse light illuminating the sample, the detector receiving the reflected light of the sample at near normal 20 degrees. Diffuse and specular standards body supplied with a standard body through the US NBS calibration, the instrument can start measuring after calibration standards bodies. Technical parameters to customize the measuring head: standard probe is used to measure the plane of the sample material can be customized probe is used to measure the surface material samples, such as 13mm in diameter cylindrical surface. Resolution: LCD display reflectance, transmittance and absorption ratio accurate to 0.001. Repeatability: ± 0.003. Accuracy: ± 0.002, standard deviation of about 0.005. Drift: 5 minute warm-up, drift is less than ± (1% of reading +0.003) / hour. Temperature: Electronic Components maximum operating temperature 60 ℃, measuring up to the first 50 ℃. Humidity: 80% maximum. Standards bodies: NBS provides metered through diffuse and specular reflectance standard. Measuring holes: 1 inch diameter measurement (25.4mm), the minimum sample diameter 1.1 inches (28mm), test hole gasket to protect the sample. Source: interchangeable tungsten plug. Power: 100-240VAC universal power supply. Cable: Standard length 1.5m, optional length 10m. http://www.chem17.com/st111155