Nikon Instruments Europe and Cool-LED have agreed that Nikon will offer the Precis Excite LED light-source with their fluorescence microscopes in Europe. Following product evaluation at their European headquarters in Amsterdam, Nikon identified the benefits and potential of the light-source to provide stable, homogeneous control of fluorescence excitation. Applications such as Confocal, time-lapse and live cell imaging all benefit from the high level of control. The modular light source enables the user to select the wavelength of excitation and control the intensity and period of excitation very precisely. As new wavelengths are required, and intensity of LEDs continues, additional LED Array Modules can be added and interchanged in the unit.