{"product_id":"nikon-s-flour-20x-objective","title":"Nikon CFI Super Fluor 20x Objective (NA 0.75, Infinity)","description":"\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003eThe \u003cstrong\u003eNikon CFI Super Fluor 20× Objective (NA 0.75)\u003c\/strong\u003e is a high-performance fluorite objective from Nikon’s Super Fluor series — delivering exceptional UV transmission below 340nm, high numerical aperture, and outstanding chromatic correction for demanding UV fluorescence applications including calcium imaging with fura-2 and indo-1, ratiometric dye imaging, and any workflow requiring high-quality fluorescence imaging from the UV through the visible spectrum.\u003c\/p\u003e\n\n\u003cul style=\"font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003e \n\u003cli\u003e🔬 \u003cstrong\u003eExceptional UV transmission below 340nm\u003c\/strong\u003e — the defining characteristic of the Super Fluor series, enabling high-efficiency excitation and emission collection for UV fluorophores including fura-2, indo-1, fluo-3, and DAPI\u003c\/li\u003e\n\u003cli\u003e📊 \u003cstrong\u003eNA 0.75 at 20×\u003c\/strong\u003e — high numerical aperture for excellent fluorescence light collection and resolution at intermediate magnification\u003c\/li\u003e\n\u003cli\u003e🌟 \u003cstrong\u003eFluorite optical elements\u003c\/strong\u003e — superior chromatic and spherical aberration correction across the UV-visible spectrum for accurate multi-channel fluorescence imaging\u003c\/li\u003e\n\u003cli\u003e📏 \u003cstrong\u003eWorking distance: 1.0mm\u003c\/strong\u003e — practical clearance for standard slides, coverslips, and imaging chambers\u003c\/li\u003e\n\u003cli\u003e♾️ \u003cstrong\u003eInfinity-corrected, M25 thread\u003c\/strong\u003e — compatible with Nikon CFI series microscopes including Eclipse Ti, Ni, E, and FN series\u003c\/li\u003e\n\u003cli\u003e🇯🇵 \u003cstrong\u003eNikon quality, made in Japan\u003c\/strong\u003e — precision optical construction for consistent, high-efficiency light transmission and long service life\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNew\u003c\/strong\u003e — catalog number MRF00201\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e🔧 Product Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003eThe 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.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e🔎 Typical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003e \n\u003cli\u003eCalcium imaging with fura-2 (340\/380nm excitation) and indo-1 (340nm excitation)\u003c\/li\u003e\n\u003cli\u003eRatiometric UV dye imaging requiring high UV transmission below 340nm\u003c\/li\u003e\n\u003cli\u003eDAPI and Hoechst nuclear staining with UV excitation\u003c\/li\u003e\n\u003cli\u003eMulti-channel fluorescence imaging combining UV and visible fluorophores\u003c\/li\u003e\n\u003cli\u003eLive-cell UV fluorescence imaging at intermediate magnification\u003c\/li\u003e\n\u003cli\u003eAny application where standard objectives have insufficient UV transmission\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e📊 Key Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse; font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"text-align:left; padding: 6px; border: 1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left; padding: 6px; border: 1px solid #ddd;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCatalog Number\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMRF00201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMagnification\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e20×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eNumerical Aperture (NA)\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eWorking Distance\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eImmersion Medium\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eDry (air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eOptical Design\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCFI Super Fluor (fluorite, high UV transmission)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eUV Transmission\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eExceptional below 340nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCorrection\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eInfinity-corrected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eThread \/ Mount\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eM25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCompatible Microscopes\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eNikon CFI Eclipse Ti, Ni, E, FN series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eCondition\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eSKU\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eMRF00201\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"font-family: 'Segoe UI Emoji', sans-serif; color: rgb(0,0,0);\"\u003e\u003cem\u003eUniversity and institutional purchase orders are welcome. Please contact us for invoicing and procurement documentation.\u003c\/em\u003e\u003c\/p\u003e","brand":"Spach Optics, Inc.","offers":[{"title":"Default Title","offer_id":51695344582957,"sku":"MRF00201","price":6400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/7965\/8029\/files\/NIKON-MRF00201-2.jpg?v=1765516855","url":"https:\/\/www.spachoptics.com\/products\/nikon-s-flour-20x-objective","provider":"Spach Optics, Inc.","version":"1.0","type":"link"}