The Lambda 950 UV/Vis/NIR is a double beam, double monochromator, all-reflecting optical system which operates in the ultraviolet (UV), visible (vis) and near infra-red (NIR) spectral range. Deuterium and tungsten Halogen light sources. Automatic source change occurs during monochromator slewing; and, programmed optical filters also perform automatic filter change. Technical specification: Wavelength range: 175 – 3300 nm Resolution: up to ≤ 0.05 nm (UV/Vis), ≤ 0.20 nm (NIR) Light sources: Deuterium and tungsten-halogen lamp Detectors: Photomultiplier (UV/Vis), PbS detector (NIR, Peltier-cooled) Extremely low stray light: ≤ 0.00007 %T at 220 nm Modularly expandable (Integrating Sphere, URA, large sample chambers, etc.) Technical Dimensions Dimensions (Width × Depth × Height): 1020 mm × 740 mm × 300 mm  Sample compartment (Primary): 200 mm × 300 mm × 220 mm (W × D × H) Sample compartment (Secondary): 480 mm × 300 mm × 220 mm (W × D × H)