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 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.