Specifications : Wavelength range : 190-1100nm Spectral Bandwidth : 2nm (5nm, 4nm, 1nm Optional) Wavelength Accuracy : ± 0.3 nm Wavelength Reproducibility : 0.15 nm Photometric System : Double beam, auto scan , Dual detectors Photometric Accuracy : ± 0.3% T (0-100%T), ± 0.002A(0~1A) Photometric Reproducibility : 0.15%T Working mode : T, A, C, E Photometric Range : -0.3, -3.5A Stray Light : 0.1%T (Nal, 220nm, NaNO2 340 nm) Baseline Flatness : ±0.002A Stability : 0.001A/h (at 500nm, after warming up) Noise : ±0.001A (at 500nm, after warming up ) Display : 6 inches high light blue LCD Detector : Silicon photodiode Power : AC:220V/50Hz, 110V/60Hz, 180W Dimensions : 630X470X210mm Weight : 26Kg.