A special long-pass emission filter in this filter set allows simultaneous viewing by eye or with a color camera of samples that are multi-labeled with quantum dot nanocrystals. It takes advantage of the unique fact that all quantum dots share a common UV/blue excitation spectrum while simultaneously exhibiting narrow and specific visible emission spectra. The highly transmitting, deep-blue exciter efficiently excites all quantum dots with no UV light to damage samples or generate undesirable background, while the high and uniform transmission of the long-pass emission filter provides exceptional and balanced brightness. And with the "no burn-out" performance shared by all BrightLine filters, the permanent performance of this set will outlast even your quantum dots!