Oriel(R) Instruments (Stratford, CT) has introduced the new fully integrated TLS Series Tunable Light Source. The system delivers up to 0.6 nm resolution of monochromatic light in a broad tunable spectral range from 250 nm to 2,400 nm. The Oriel TLS systems are mounted on a 12”x24” baseplate and feature a research series light source, a motorized filter wheel with four order sorting filters, as well as a 1/8m monochromator with two multiple fixed slit wheels and two 600 l/mm gratings. The integrated TracQ(TM) software package for PC-based system command and data acquisition is also part of the standard system. Oriel Instruments offers three models of fully integrated TLS systems, namely 75W Xenon, 300W Xenon, and 250W Quartz Tungsten Halogen lamp based systems.