Reflectance factors:99%, 75%, 50%, and 2%.
This set of 4 calibrated 1.25" diameter diffuse reflectance standards are used for establishment of photometric accuracy and linearity in diffuse reflectance. Reflectance calibration is NIST® traceable, and is calibrated 250-2500 nm reported each 50 nm. Disc included with data each 1 nm.
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