Zeiss Plan-Apochromat 40x/0.95 Dry Objective with Correction Collar (Infinity, M27)

The Zeiss Plan-Apochromat 40×/0.95 is a premium dry objective combining the highest NA available in a 40× dry format with Zeiss plan apochromat correction and a correction collar for coverslip thickness compensation. The correction collar (0.13–0.21mm) allows the objective to be optimized for different coverslip thicknesses — from standard #1 (0.13mm) through #1.5 (0.17mm, the most common) to #2 (0.21mm) — ensuring optimal spherical aberration correction regardless of the coverslip used. This makes the objective significantly more versatile than fixed-correction dry objectives, particularly valuable in labs that use different coverslip types across different specimen preparations. The plan apochromat correction delivers Zeiss’s highest level of chromatic and spherical aberration correction, ensuring accurate co-localization across all fluorescence channels and sharp, flat-field imaging in brightfield and DIC. At NA 0.95, this objective provides resolution approaching that of lower-NA immersion objectives without the need for immersion media — ideal for high-throughput screening, slide scanning, and workflows where the convenience of a dry objective is preferred. This unit is offered in excellent, as-new condition at a significant discount to the new list price of $9,800. Compatible with Zeiss Axiovert, Axioplan, Axio Observer, Axio Imager, and Axio Examiner microscopes with M27 thread nosepieces. Catalog number 420660-9970.