Nikon CFI Super Fluor 20x Objective (NA 0.75, Infinity)

The Nikon CFI Super Fluor 20× is part of Nikon’s Super Fluor objective series — a line specifically engineered for the highest UV transmission performance available in a standard infinity-corrected objective. The Super Fluor series achieves exceptional transmission below 340nm through the use of specially selected fluorite glass elements, making these objectives the definitive choice for UV fluorescence applications where standard fluorite or apochromat objectives have insufficient UV transmission. At 20× with NA 0.75, this objective provides an excellent balance of field of view and resolution for calcium imaging with ratiometric UV dyes (fura-2 excitation at 340/380nm, indo-1 excitation at 340nm), DAPI imaging, and any multi-channel fluorescence workflow that includes UV excitation wavelengths. The fluorite optical design also delivers outstanding chromatic correction across the full UV-visible spectrum, ensuring accurate co-registration between UV and visible fluorescence channels. Compatible with Nikon CFI series microscopes including Eclipse Ti, Ni, E, and FN series. Supplied new from stock, catalog number MRF00201.