AmScope A4X-INF-B Infinity Achromatic Biological Objective Lense with 4X Magnification

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This is a 4X achromatic objective lens with black finish for certain infinity-corrected microscopes. Intended primarily for biological applications, it is designed to work with inf inity-corrected microscopes using RMS mounting thread 45mm parfocal distance. Achromatic correction provides improved color accuracy and resolution. Compatibility Optical System Infinite Reference Focal Length 180mm Mounting Thread RMS 20.32mm Parfocal Distance 45mm Lens Specifications Magnification 4X Numerical Aperture 0.10 Corrections Achromatic Cover-glass Thickness — Nosecone Fixed Immersion Medium — Show more