{"product_id":"nikon-cfi75-apo-25xc-w-water-dipping-objective-420-1400-nm","title":"Nikon CFI75 Apo 25XC W Water Dipping Microscope Objective | 420–1400 nm","description":"\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003eNikon CFI75 Apo 25XC W Water Dipping Microscope Objective | 420–1400 nm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\n🔬 Ultra-premium apochromat water dipping objective for advanced multiphoton microscopy\u003cbr\u003e\n🎯 25X magnification with exceptional 1.1 numerical aperture for maximum resolution\u003cbr\u003e\n🌈 Apochromatic correction optimized for extended wavelength range: 420–1400 nm\u003cbr\u003e\n💧 Water immersion design for direct contact with live tissue and aqueous specimens\u003cbr\u003e\n📏 Long 2mm working distance ideal for deep tissue penetration and manipulation\u003cbr\u003e\n⚙️ Correction collar adjustable for coverglass thickness 0–0.17mm\u003cbr\u003e\n🔧 M25 thread compatible with Nikon CFI75 upright microscope systems\u003cbr\u003e\n✨ Brand new condition with full factory specifications\n\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e🔧 Product Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\nThe Nikon CFI75 Apo 25XC W represents the pinnacle of water dipping objective design, engineered specifically for advanced multiphoton microscopy, two-photon imaging, and deep tissue neuroscience applications. As part of Nikon's prestigious CFI75 optical system, this apochromat objective delivers exceptional chromatic correction across an extraordinarily broad wavelength range from 420 nm (visible blue) through 1400 nm (near-infrared), making it ideal for multiphoton excitation, second harmonic generation (SHG), and third harmonic generation (THG) imaging. The ultra-high numerical aperture of 1.1 in water immersion provides outstanding resolution and light-gathering efficiency, enabling visualization of fine cellular structures deep within living tissue. Unlike conventional water immersion objectives requiring coverglass, this dipping objective is designed for direct immersion into physiological buffers, eliminating optical aberrations and enabling imaging deep into brain slices, organotypic cultures, and intact tissue preparations. The 2mm working distance provides ample clearance for micromanipulation equipment while maintaining the high NA essential for multiphoton imaging, and the integrated correction collar allows precise compensation for coverglass thickness variations (0–0.17mm) when needed. The apochromatic optical design ensures minimal chromatic aberration across the entire wavelength range, critical for accurate co-localization in multi-color imaging and quantitative analysis. Compatible with Nikon's advanced upright microscope systems, this objective is an essential tool for laboratories conducting cutting-edge neuroscience research, in vivo imaging, optogenetics, and any application requiring the highest optical performance for deep tissue multiphoton microscopy.\n\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" 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;\"\u003e\n\u003cli\u003eTwo-photon and multiphoton fluorescence microscopy\u003c\/li\u003e\n\u003cli\u003eDeep tissue imaging in brain slices and live tissue\u003c\/li\u003e\n\u003cli\u003eIn vivo imaging and intravital microscopy\u003c\/li\u003e\n\u003cli\u003eSecond harmonic generation (SHG) and third harmonic generation (THG) imaging\u003c\/li\u003e\n\u003cli\u003eNeuroscience research and calcium imaging in tissue\u003c\/li\u003e\n\u003cli\u003eOptogenetics and photostimulation experiments\u003c\/li\u003e\n\u003cli\u003eElectrophysiology combined with high-resolution imaging\u003c\/li\u003e\n\u003cli\u003eOrganotypic culture and thick tissue preparation imaging\u003c\/li\u003e\n\u003cli\u003eDevelopmental biology and embryo imaging\u003c\/li\u003e\n\u003cli\u003eAdvanced fluorescence imaging requiring extended wavelength range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cstrong\u003e📊 Key Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"font-family: 'Segoe UI Emoji', sans-serif; border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 40%;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 60%;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel \/ Catalog Number\u003c\/td\u003e\n\u003ctd\u003eCFI75 Apo 25XC W \/ MRD77220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e25X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumerical Aperture (NA)\u003c\/td\u003e\n\u003ctd\u003e1.1 (water immersion)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eApochromat, Infinity-Corrected (CFI75)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImmersion Type\u003c\/td\u003e\n\u003ctd\u003eWater dipping (direct immersion, no coverglass required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Distance\u003c\/td\u003e\n\u003ctd\u003e2mm (long working distance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength Range\u003c\/td\u003e\n\u003ctd\u003e420–1400 nm (optimized for multiphoton imaging)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrection Collar Range\u003c\/td\u003e\n\u003ctd\u003e0–0.17mm coverglass thickness adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChromatic Correction\u003c\/td\u003e\n\u003ctd\u003eApochromat (exceptional correction across UV to near-IR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eM25 (25mm metric thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eNikon CFI75 upright microscopes (FN1, Ni-E with CFI75 adapter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Applications\u003c\/td\u003e\n\u003ctd\u003eMultiphoton, two-photon, deep tissue imaging, in vivo imaging, SHG\/THG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003cp class=\"MsoNormal\" style=\"font-family: 'Segoe UI Emoji', sans-serif;\"\u003e\u003cem\u003eUniversity purchase orders are welcome and accepted. Please contact us for institutional pricing and procurement assistance.\u003c\/em\u003e\u003c\/p\u003e","brand":"spachoptics","offers":[{"title":"Default Title","offer_id":51695344288045,"sku":"MRD77220","price":31500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/7965\/8029\/files\/NIKON-MRD77220-2.gif?v=1765516787","url":"https:\/\/www.spachoptics.com\/products\/nikon-cfi75-apo-25xc-w-water-dipping-objective-420-1400-nm","provider":"Spach Optics, Inc.","version":"1.0","type":"link"}