The system is a modular fluorescence and phosphorescence spectrometer for measuring spectra from the ultraviolet to the near infrared spectral range, and lifetimes spanning from picoseconds to seconds. The FLS1000 comes with a 450 W ozone free xenon arc lamp that covers a range of 230 nm to >1000 nm for steady state measurements. Red and blue CW lasers are also available. The system features double grating Czerny-Turner monochromators both in the excitation and in the emission path. The sample holders can be used for solid and liquid samples. Photoluminescence quantum yield can be measured using a calibrated integrating sphere.