This is a UV filter block for the IN480-FL series fluorescent microscopes. When installed, this filter assembly allows you to view specimens which fluoresce in the violet to blue range when excited by ultraviolet light. With the excitation center wavelength of 365nm, and emission center wavelength of 450nm, this filter works with DAPI, Hoechst 33342 and 33258, AMCA, and AMCA-X stains. Features & Specifications: Excitation Filter Type: bandpass Excitation Center Wavelength: 365nm Excitation Band: 50nm Dichroic Mirror Type: dichroic longpass Dichroic Mirror Cut-on Wavelength:400nm Emission Filter Type: descriminating filter Emission Center Wavelength: 450nm Emission Band: 65nm Stains: DAPI, Hoechst 33342, Hoechst 33258, AMCA, AMCA-X Packing List: 1 filter cube in plastic case 1 screw-in rod