With high diffuse reflectance values, Labsphere's Spectralon Reflectance Standards provide accurate calibration for a variety of testing equipment. Spectrophotometers, densitometers, integrating sphere systems, optical equipment, photographic equipment, reflectometers and remote sensing instruments can be calibrated according to NIST traceable standards. Available in a variety of reflectance values and colours, with values ranging from 2% to 99% reflectance values over the 250–2500 nm range, the diffuseness of the standards eliminate viewing angle errors. The standards come both calibrated and uncalibrated and are available individually and as sets. The units are thermally stable, washable and waterproof for use in a wide variety of environments from laboratory to production and quality control.