This used Nikon Plan Apo 20x/0.75 objective lens is designed for advanced microscopy applications requiring high-resolution imaging with differential interference contrast (DIC). It features a numerical aperture of 0.75 and is corrected for infinity optics (∞/0.17). The Plan Apochromatic design minimizes chromatic aberration for clear, color-accurate images. Suitable for researchers and technicians working in biology, material science, or pathology labs. The N2 DIC designation indicates its specific compatibility with certain Nikon DIC prism systems. Free shipping is available for this item. As a used component, it offers a cost-effective way to expand or replace optics in a compatible microscope setup. Check the listing for full details on cosmetic condition and specific model compatibility. Nikon Plan Apo λ Lambda 20x/0.75 ∞/0.17 CFI60 DIC N2 Microscope Objective Lens. Condition: Used. Listed at 820.00 USD. Nikon Plan Apo λ 20x/0.75 ∞/0.17 WD 1.0 OFN25 DIC N2 Microscope Objective Lens Manufacturer: Nikon Model: Plan Apo λ (Lambda) Magnification: 20x Numerical Aperture: 0.75 Optical System: Infinity corrected (Nikon CFI60) Cover Glass Correction: 0.17 mm Field Number: 25 (OFN25) Thread Mount: M25 Working Distance: 1.0 mm Immersion: Dry Objective is in excellent, like new condition! Please refer to photos and let me know if you have any questions!