Optical system Grating monochromator with Coupled-Beam Monitoring SystemTM Wavelength range 200 to 1100 nm in 0.1 nm increments Spectral Bandwidth 5 nm Wavelength Accuracy ±1 nm Wavelength Reproducibility ±0.3 nm Stray Light 0.05% at 340 and 220 nm Photometric Range 0 to 200%T and -0.3 to 3.0 Abs