DUETTA

fluorescence spectrometers; spectrofluorometers; photoluminescence spectrometers; photoluminescence lifetime spectrometers, photoluminescence quantum yield spectrometers; absorbance spectrometers; spectrographs; microscopes; scanners; and components for all of the foregoing goods, namely, diffraction grating, optical lenses, optical mirrors and optical filters; computer software used of optical analysis, namely, data acquisition and processing