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Colors for this set are orange, purple, cyan and violet. This set of 4 calibrated 2 inch diameter diffuse color standards are used for establishment of photometric accuracy and linearity in diffuse reflectance mode. Calibration is traceable to NIST® and NPL standards, and is calibrated 250-2500 nm reported each 50 nm. Disc is included with data each 1 nm.
The VW directional reflection accessory makes it possible to calibrate reflectance standards at near-normal incidence and at oblique incidence for P and S polarization separately, Glan Thompson polarizer included. The total calibration uncertainty which can be obtained on reference mirrors with reflectance more than 80% using this high-performance accessory is typically less than 0.1% in the visible range and less than 0.2% in the UV and NIR ranges.
For use with Lambda L650/750/850/850+/950/1050/1050+ Spectrometers. Must be used with a sphere detector, not included.