This single-band filter set is perfectly optimized for brilliant, dense multi-color detection with quantum dot nanocrystals. The highly transmitting, deep-blue exciter achieves maximum quantum dot excitation efficiency while virtually eliminating any DAPI or Hoechst excitation. The emitter has high transmission, steep edges, and a narrow bandwidth to perfectly match the Qdot 655 emission with minimal crosstalk from neighboring Qdots. With its exceptionally wide and flat transmission and reflection bands, the dichroic not only accommodates all Qdot nanocrystals but does so with a wide range of possible UV and blue excitation wavelengths. And with the "no burn-out" performance shared by all BrightLine filters, this set is the ideal tool for applications that depend on the superb photostability and archivability of quantum dots.