The B450 binocular compound microscope is designed for educational and professional use. The medium-sized profile offers streamlined ergonomics with plenty of working room. The heavy-duty metal build and enamel coating will last for many years through rigorous use. High-quality semi-plan achromatic optics and LED transmitted illumination produce sharp, high-contrast images with improved field flatness for biological applications. To customize the microscope to your viewing comfort, the eyepiece spacing can be easily adjusted using a precision Siedentopf mechanism. A diopter is available on the left ocular tube to compensate for asymmetry, and the ocular tubes are angled at 30° to comfortably accommodate a seated position without neck strain. The head can also be rotated 360° to accommodate multiple users. Various eyepieces can be used to increase the overall optical magnification. The objective turret provides instant access to 4 magnification levels to easily focus in on minute details from 40X to 1000X. This covers magnifications needed for studying hair follicles, cells, and bacteria. The turret's reversed orientation provides more working room above the stage. These high-quality lenses are achromatically corrected to improve resolution and color accuracy, with semi-plan flat-field correction for improved edge-to-edge focus. The 2-layer mechanical stage provides smooth and precise movement for examination of specimen slides. The stage's low-position controls are conveniently placed near the coaxial focus knobs for a streamlined workflow. Examining specimen slides is intuitive and precise for users at any skill level. An adjustable height limit can be set to prevent damage to the lenses and specimens while focusing. The LED sub-stage lighting provides cool, energy-efficient illumination. The light-source is daylight balanced to produce natural colors for imaging. The Abbe light condenser has a high 1.25 numerical aperture for oil-immersion, and an iris diaphragm to optimize contrast and depth-of-field. The condenser holder uses rack-and-pinion height adjustment for precision control. Specifications Optical System Finite-conjugate Tube Length 160mm Head Binocular, 30° incline, 360° rotatable Interpupillary Adjustment sliding, 53-77mm Ocular Diameter 23mm Eyepieces 10X Objective Lenses DIN standard Objective Parfocal Distance 45mm Objective Mounting Thread RMS 20.32mm Objective Turret Reversed quadruple Focusing System Coaxial coarse and fine focus, upper limit-stop, tension-control Stage Design Double-layer with caliper Stage Dimensions 127mm x 89mm X-Y Translation Range 70mm x 30mm Transmitted Illumination Variable-intensity LED Condenser NA1.25 Abbe condenser with iris diaphragm Sub-stage Condenser-holder rack and pinion Power 100-240VAC 50/60Hz wide-band Objective Lenses Magnification Corrections NA Immersion Medium Cover-glass Thickness 4X semi-plan achromatic 0.10 — 0.17mm 10X semi-plan achromatic 0.25 — 0.17mm 40X semi-plan achromatic 0.65 — 0.17mm 100X semi-plan achromatic 1.25 oil 0.17mm Packing List:One binocular microscope head One microscope body Four objective lenses: 4X, 10X, 40X and 100X One pair 10X eyepieces One dust cover One sample immersion oil
