The Cary 6000i is a high performance UV-Visible-NIR spectrophotometer with unmatched photometric performance in the 175-1800 nm range. Using narrow band InGaAs detection for improved linearity the Cary 6000i is the ultimate tool for materials science research. Controlled by the Cary WinUV software, a modular Windows-based software, makes it easy to perform powerful analysis and control a number of optional accessories. The large sample compartment can be expanded to hold large accessories and integrating spheres for spectral and diffuse reflectance. The LockDown mechanism makes it possible to quickly change and position accessories for reproducible results.