PerkinElmer LS Series Spectrometer L2250035 Well Plate Reader Accessory

Used, as shown in pictures 

The Well Plate Reader Accessory allows you to switch from a cuvette-based system to a well-plate reader in seconds. It is front-mounted, providing easy access to standard well plates up to 96-positions. This accessory has silica fibers for work about 260 nm (Excitation) and 340 nm (Emission). It has four modes of measurements: fluorescence, phosphorescence, bioluminescence, and chemiluminescence.