Biological microscope designed for professional use. Ideal for the identification and analysis of biological substances and cultures in microbiology, biology, medicine and pathology. . The VE-B310 is a great tool for research, higher education and routine work in clinical laboratories. It is highly adaptable to the needs of the user, it has the possibility of a large number of configurations, compatible with a phase contrast kit, dark field, simple polarization and LED fluorescence lighting. Product Specifications: EYEPIECES PL 10X/20 mm 360° rotary, with rubber eyecups and ± 5 mm diopter adjustment in both eyepieces. HEAD Binocular Gemel type, 30° inclined with interpupillary distance adjustment between 50-75 mm/1.96in- 2.95in. NOSEPIECE Quadruple nosepiece with anti-slip grip and click-stops, mounted on high-tension ball bearings. OBJECTIVES 4X, 10X, 40X (S) and 100X (S) (oil), infinity corrected plan achromatic optics and color ring for easy identification. STAND Stative, robust and reinforced with epoxy paint finish. CONDENSER Abbe, N.A. 1.25 with height adjustment screw. Equipped with adapter for optional configurations (not included). STAGE Two-Layer stage with X-Y coaxial movement, 5.90in x 5.51in, Vernier, millimeter scale (3.46in x 2.36in), clamp and height adjustment with stop. DIAPHRAGM Iris with filter holder. FOCUSING Coarse and fine anti-slip control knob with precision 0.001 mm, 200 graduations per micrometer turn (0.2 mm) and tension adjustment. ILUMINATION Kohler 3W LED (3000K-5600K), light intensity continuously adjustable; LCD beside the frame to show the color temperature, with intensity control and field diaphragm in the lamp. POWER SUPPLY 110-240V, 50/60 Hz, AC Adapter. Accessories included: Dust cover. Immersion oil. Operation manual. Power cord.