The Patented Quad Stereo Fluorescence Illuminator was invented by Kramer to upgrade standard CMO stereo microscopes to full fluorescence functionality with ease. The Quad is well known throughout the fluorescence community as the best fluorescence adapter to add to your standard stereo system (Zeiss, Nikon, Olympus, and Leica). The Quad Fluorescence Illuminator holds up to 4 patented 2 dichroic mirror fluorescence cubes that give clear, bright and even fluorescence images. Kramer offers and extensive set of filters made by Chroma for your fluorescence needs.