The CUV-ALL-UV Cuvette Holder for 1 cm pathlength cuvettes is equipped with fiber couplers on each of the four quartz f/2 collimating lenses, which are coupled to the fiber to read or illuminate samples. When used with Ocean Optics modular spectrometers and light sources, the CUV-ALL-UV Cuvette Holder can measure absorbance, fluorescence, scattering, or any combination of these optical phenomena.