{"product_id":"nikon-cfi-plan-apo-20x-objective","title":"Nikon CFI Plan Apo 20x Objective","description":"\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003eThe \u003cstrong\u003eNikon CFI Plan Apo 20x\/0.75\u003c\/strong\u003e is a premium apochromatic dry objective for all Nikon infinity-corrected microscopes, delivering exceptional flatness of field, chromatic correction, and 0.75 NA at 20x magnification — the gold standard for high-resolution widefield fluorescence, brightfield, and multi-channel imaging at the tissue and cell level.\u003c\/p\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003e• 🌟 \u003cstrong\u003e20x \/ 0.75 NA apochromatic (Plan Apo)\u003c\/strong\u003e — the highest level of chromatic and spherical aberration correction available in a 20x objective\u003cbr\u003e• 📍 \u003cstrong\u003ePlan (flat field) correction\u003c\/strong\u003e — sharp, flat images edge-to-edge for widefield imaging and tiling workflows\u003cbr\u003e• ♾️ \u003cstrong\u003eInfinity corrected, M25 thread\u003c\/strong\u003e — fits all Nikon CFI infinity-corrected microscopes (Eclipse E, Ti, Ni, Ci, and others)\u003cbr\u003e• 📏 \u003cstrong\u003e1.0mm working distance\u003c\/strong\u003e — comfortable clearance for standard coverslipped specimens\u003cbr\u003e• 🏭 \u003cstrong\u003eGenuine Nikon OEM\u003c\/strong\u003e — new condition, made in Japan\u003cbr\u003e• 🎓 \u003cstrong\u003eUniversity purchase orders accepted\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e🔧 Product Description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003eThe Nikon CFI Plan Apo 20x\/0.75 is one of the most widely used research objectives in the Nikon CFI lineup, combining apochromatic optical correction with flat field performance at a magnification that balances field of view and resolving power for tissue-level and cell-level imaging. The apochromatic design corrects chromatic aberration across three wavelengths and spherical aberration across two, producing images with exceptional sharpness, contrast, and color fidelity across the visible spectrum — critical for multi-channel fluorescence microscopy where consistent focus across DAPI, GFP, and far-red channels is essential. The Plan correction ensures the image is flat and sharp from center to edge, making this objective ideal for widefield tiling, stitching, and large-area imaging workflows. At 0.75 NA, this objective delivers excellent light collection and resolving power for a dry 20x objective, enabling high-quality fluorescence imaging without immersion media. The 1.0mm working distance provides comfortable clearance for standard coverslipped specimens. The M25 CFI thread mount fits all Nikon infinity-corrected microscope platforms. Supplied in new condition.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e🔎 Typical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003e• Multi-channel widefield fluorescence imaging of tissue sections and cell monolayers at 20x\u003cbr\u003e• Large-area tiling and stitching workflows requiring flat, sharp images edge-to-edge\u003cbr\u003e• Brightfield histology and pathology imaging at tissue level on Nikon Eclipse platforms\u003cbr\u003e• High-content screening and automated imaging requiring consistent focus across channels\u003cbr\u003e• Replacement or upgrade of 20x objectives on Nikon CFI infinity-corrected microscope systems\u003c\/p\u003e\n\u003chr\u003e\n\u003cp style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003e\u003cstrong\u003e📊 Key Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse; font-family:'Segoe UI Emoji', sans-serif;\"\u003e\n\u003ctr\u003e\n\u003cth style=\"background:#f2f2f2;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"background:#f2f2f2;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eNikon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eCFI Plan Apo 20x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e20x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumerical Aperture\u003c\/td\u003e\n\u003ctd\u003e0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImmersion Medium\u003c\/td\u003e\n\u003ctd\u003eDry (Air)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Correction\u003c\/td\u003e\n\u003ctd\u003ePlan Apochromat (Plan Apo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking Distance\u003c\/td\u003e\n\u003ctd\u003e1.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorrection\u003c\/td\u003e\n\u003ctd\u003eInfinity Corrected\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Mount\u003c\/td\u003e\n\u003ctd\u003eM25 (CFI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Systems\u003c\/td\u003e\n\u003ctd\u003eAll Nikon CFI Infinity-Corrected Microscopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eJapan\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 style=\"font-family:'Segoe UI Emoji', sans-serif;\" class=\"MsoNormal\"\u003eUniversity and institutional customers are welcome to submit purchase orders. Please contact us for net terms and procurement documentation.\u003c\/p\u003e","brand":"spachoptics","offers":[{"title":"Default Title","offer_id":51695323808045,"sku":"NIKON-APO-20X","price":995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0933\/7965\/8029\/files\/NIKON-APO-20X-2.gif?v=1765514737","url":"https:\/\/www.spachoptics.com\/products\/nikon-cfi-plan-apo-20x-objective","provider":"Spach Optics, Inc.","version":"1.0","type":"link"}