195 Achromatic Objective Lens for Biological Microscope, RMS 20.2mm, 4X 20x 40x 60x 100x Oil Immersion Lens Set with Copper Core, High Magnification Microscope Objective（20X）

COPPER CORE OBJECTIVE LENS: Designed for high-performance biological microscopy with copper core construction for improved heat dissipation and stable imaging during extended use

HIGH MAGNIFICATION : 100X oil immersion objective maximizes light transmission by using oil to forestall refraction loss, delivering clear and bright visualization of fine cellular structures

RMS THREAD FIT: 20.2mm thread size provides secure fit for usual biological microscopes with 185 or 195mm tube length, reliable alignment without slippage

MULTI-LAYER COATED OPTICS: Achromatic lens with multi-layer coating offers lasting performance and high light transmittance, resulting in contrast and accurate color reproduction

VERSATILE MICROSCOPY USE: From 4X to 100X magnifications, this objective set supports a wide range of applications including cell observation, blood analysis, and student research