The present invention provides a multi UV-LED probe system for detection of a characteristic of a sample, the system including a device comprising a probe head, the probe head including a plurality of UV-LEDs, an optic fiber bundle, an optional heating surface, an optional cooling surface and a light directing means adapted to transfer UV from the plurality of UV-LEDs to a region of the sample and further adapted to receive fluorescent light from the region to focus it into the optic fiber bundle and a power source adapted to provide electrical energy to the plurality of UV-LEDs, a spectrophotometer configured to receive the fluorescent light from the optic fiber bundle and a processor adapted to receive signals associated with the fluorescent light and to process the signals to provide the detection of the characteristic of the sample.