From FTIR Accessories
Variable angle spectral reflectance accessory. 5 - 85º angle of incidence with 1º resolution. Factory-calibrated reference dial. Easy user-calibration and position lock. Simultaneous rotation of sample and mirror planes for constant pathlength. Kinematically mounted for stability. KBr input/output conditioning lense. 50% throughput provides excellent signal to noise resolution. Easy interface with most spectrometers.