ROCKLAND, Mass., March 12, 2015 — The Lumen 100-LED from Prior Scientific provides illumination for a range of fluorescence microscopy applications with no vibration and minimal heat production. The system covers wavelengths throughout the visible spectrum and allows for precise intensity control in 1 percent increments. Adapters are available to connect the illuminator to most upright and inverted microscopes currently on the market. A combiner allows two LEDs to be used simultaneously. The unit can be enhanced by the addition of excitation filters to further optimize the bandwidth for specific applications. It is suitable for the majority of fluorophores used in fluorescence applications. It may also be used in electrophysiology and optogenetics.