{"product_id":"zeiss-microscope-objective-fluar-20x-0-75-0-17-420150-9900","title":"Zeiss FLUAR 20x0.75 ∞\/0.17 420150-9900 Microscope Objective","description":"\u003cp\u003e\u003cb\u003eCarl Zeiss FLUAR 20x\/0.75 ∞\/0.17 Microscope Objective (420150-9900, M27)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUsed, in perfect optical condition\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003eZeiss FLUAR 20x\/0.75\u003c\/b\u003e is a high-performance, high-numerical-aperture dry objective engineered for demanding fluorescence, confocal imaging, and laser microdissection. Built with specialized low-autofluorescence optical glass, it delivers exceptional transmission from the near-UV through the near-IR spectrum (400–800 nm throughput peak at 85%–98%). Designed for the modern Zeiss M27 thread mount and Infinity Color-Corrected System (ICS), it offers maximum photon capture without requiring immersion media.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Highlights\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eExceptional UV\/VIS\/NIR Transmission:\u003c\/b\u003e 5-star rating for Ultra-Violet transmission; steep transmission curve starting below 340 nm and maintaining over 90% across the visible spectrum.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHigh-NA Dry Convenience:\u003c\/b\u003e Combines a high 0.75 numerical aperture with a 0.60 mm working distance, providing sharp, high-resolution imaging without oil or water immersion.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eConfocal \u0026amp; Laser Microdissection Ready:\u003c\/b\u003e Optimized for UV\/VIS laser confocal microscopy and laser microdissection workflows.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLarge Field of View:\u003c\/b\u003e Supports up to 23 mm field of view for high-throughput screening and widefield observation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eModel \/ Part Number\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eZeiss FLUAR 20x \/ 420150-9900\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eMagnification\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e20x\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eNumerical Aperture (NA)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eFree Working Distance (WD)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.60 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eCoverglass Correction\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.17 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eImmersion Medium\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eDry (Without Immersion)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eField of View (FOV)\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e23 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eParfocal Length\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e45.06 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eThread Standard\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eM27 × 0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cb\u003eOptical System\u003c\/b\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eICS (Infinity Color Corrected System)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003eRecommended Applications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUV-excited fluorophores (DAPI, Hoechst, Alexa Fluor 350, Fura-2 ratiometric imaging)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaser Scanning Confocal Microscopy (CLSM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLaser-Assisted Microdissection (LMD \/ PALM)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh-contrast Brightfield and Differential Interference Contrast (DIC)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Carl Zeiss","offers":[{"title":"Default Title","offer_id":42817561591887,"sku":"","price":1500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0636\/5888\/5199\/files\/IMG_4774_1.jpg?v=1789464311","url":"https:\/\/chengtuoptics.com\/products\/zeiss-microscope-objective-fluar-20x-0-75-0-17-420150-9900","provider":"Chengtu Optics","version":"1.0","type":"link"}