Water immersion objectives deliver higher numerical aperture and less spherical aberration than air objectives when imaging aqueous samples — essential for electrophysiology, live-cell imaging, confocal, and multiphoton work. This collection includes both dipping objectives (designed to enter the bath directly, no coverslip, like the Olympus LUMPLFLN and XLUMPLFLN series) and coverslip-corrected water immersion optics (like the Olympus UPLSAPO W and Leica PL APO W series). We stock Olympus, Nikon, and Leica water objectives from 10x to 100x, with options for IR/NIR transmission and long working distances for patch-clamp access. Every objective is quality-verified before shipping. Unsure whether your application calls for a dipping or coverslip-corrected design? Ask us — it's the most common question we get, and the answer determines which half of this collection you need.