This set is designed to take advantage of the superior resolution, sensitivity, and image fidelity of today’s state-of-the-art laser-based microscopes. The filter spectra are optimized to capture the maximum fluorescence from GFP, FITC, and other similar fluorophores while offering superb blocking of popular 473 nm (solid-state) or 488 nm (Ar-ion gas and solid-state) lasers. The dichroic offers excellent flatness for minimal focus shift and aberrations of the laser beam spot at the sample. Our improved version is certified to deliver dichroic flatness