Zeiss LD Plan-Neofluar 63x/0.75 KORR PH2 Long Working Distance Objective (NA 0.75, Infinity, M27)

The Zeiss LD Plan-Neofluar 63×/0.75 KORR PH2 Long Working Distance Objective (M27) is a specialized long working distance dry objective combining an exceptional 2.2mm working distance, a wide-range correction collar, and an integrated PH2 phase ring — designed for phase contrast and fluorescence imaging of living cells in thick vessels, multi-well plates, Petri dishes, and other specimens where standard short-working-distance objectives cannot reach. M27 thread for Zeiss Axio series microscopes. Offered here in excellent condition with flawless optics at significant savings versus the new list price.

• 📏 Long working distance: 2.2mm — exceptional clearance at 63× for imaging through thick plastic vessels, multi-well plates, Petri dishes, and imaging chambers where standard objectives cannot reach the specimen
• 🔧 Wide correction collar (KORR) — adjustable coverslip and substrate thickness compensation enabling optimal spherical aberration correction through plastic vessel bottoms of varying thickness, coverslips, and other substrates
• 🔍 PH2 phase ring — integrated phase contrast ring compatible with PH2 condenser annuli for high-contrast phase contrast imaging of living cells without staining or fixation
• 🌟 Plan-Neofluar optical design — fluorite glass elements providing excellent chromatic correction and fluorescence transmission for combined phase contrast and fluorescence imaging
• 📐 M27 thread mount — compatible with Zeiss Axio series microscopes including Axiovert, Axio Observer, Axio Imager, and Axio Examiner
• 🇩🇪 Zeiss quality, made in Germany — precision optical construction for consistent, high-efficiency light transmission and long service life
• ✅ Condition: Excellent — flawless optics — catalog number 421381

🔧 Product Description

The Zeiss LD Plan-Neofluar 63×/0.75 KORR PH2 M27 is a purpose-built long working distance objective for cell biology workflows where specimens are imaged through thick plastic substrates — multi-well plates, Petri dishes, T-flasks, and imaging chambers — that standard short-working-distance objectives cannot accommodate. The 2.2mm working distance provides ample clearance for the full range of standard tissue culture vessels, while the correction collar (KORR) enables optimal spherical aberration correction through plastic bottoms and substrates of varying thickness. This combination makes the LD Plan-Neofluar 63× KORR uniquely versatile for live-cell imaging in standard tissue culture conditions without the need to transfer cells to specialized coverslip-bottom dishes. The integrated PH2 phase ring enables high-contrast phase contrast imaging of living cells alongside fluorescence, making this a comprehensive objective for cell biology labs that need both modalities at 63×. The Plan-Neofluar fluorite design provides good chromatic correction and fluorescence transmission for multi-channel imaging. The M27 thread mount is the current Zeiss standard, compatible with Zeiss Axiovert, Axio Observer, Axio Imager, and Axio Examiner microscopes. This unit is offered in excellent condition with flawless optics at a significant discount to the new list price of $6,900. Catalog number 421381.

🔎 Typical Applications

• Live-cell phase contrast imaging through multi-well plates, Petri dishes, and T-flasks
• Fluorescence imaging of cells in standard tissue culture vessels without coverslip-bottom dishes
• Combined phase contrast and fluorescence imaging at 63× in a single objective
• Long-term time-lapse imaging of living cells in standard culture conditions
• Any application where standard 63× working distance is insufficient for the vessel or substrate
• Imaging through thick plastic substrates requiring correction collar compensation

📊 Key Specifications

University and institutional purchase orders are welcome. Please contact us for invoicing and procurement documentation.