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The National 799-160P 100xR Retractable Plan Achromat Objective Lens is for use with the 160 and 165 microscope series. It features a 1.25 numerical aperture and 100x magnification. A retractable objective lens provides additional protection against lens or slide damage. The lens also features a planar achromatic design, providing a flat field and correction for color and spherical aberration.
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National 799-160P 100xR Retractable Plan Achromat Objective Lens Review