Leica HCX PL APO 40x/1.25 Oil Immersion Objective (NA 1.25, Infinity, M25)

The Leica HCX PL APO 40×/1.25 Oil is a premium plan apochromat objective from Leica’s HCX (High Correction) series — a line that represents Leica’s highest level of optical correction for biological microscopy. The HCX designation indicates that this objective meets Leica’s most stringent correction standards, combining plan apochromat chromatic correction with optimized spherical aberration correction for the highest image quality in confocal, widefield fluorescence, and DIC imaging. At NA 1.25 with oil immersion, this objective provides excellent resolution and fluorescence light collection for single-cell and subcellular imaging — protein localization, organelle dynamics, multi-channel co-localization, and FRET studies. The plan apochromat correction ensures accurate chromatic registration across all fluorescence channels, essential for any imaging workflow where chromatic shift between channels would compromise data integrity. The 40× magnification provides a practical balance between field of view and resolution for a wide range of biological imaging applications. This unit is offered in light use condition with flawless optics at a significant discount to the list price of $4,200. Compatible with Leica DMI, DM, and SP series microscopes with M25 thread nosepieces. Catalog number 506179.