This is the 220V version of the B490B for use only in regions which support 220V. The B490 is our hardest-working, go-to microscope. The top choice for veterinarians, breeders, and clinics, this instrument has proven reliability and optical-quality. It boasts features such as a compensation-free Siedentopf head, smooth stage translation, and a precision focus system with easy tension-adjustment and vertical lock. The 490 series offers a wide range of optional accessories to expand the functionality. The magnification range can be expanded with a large selection of objective and ocular lenses. Specialized condensers are available for dark-field and phase-contrast applications, ideal for bloodwork, fluid-analysis, and pathology. Specifications Optical System Finite Mechanical Tube-length 160mm Head Binocular, 30° incline, 360° rotatable Interpupillary Adjustment Compensation-free gemel Ocular Tube Diameter 23mm Eyepieces 10X FN 18mm20X Nosepiece Quadruple forward Objective Lenses 4X, 10X, 40X (spring), 100X (spring, oil) Focusing System Coaxial coarse and fine focus, upper limit-stop, tension-control Stage Double-layer 140mm x 140mm X-Y Translation Range 75mm x 45mm Focus Range 30mm Fine-focus Precision 0.002mm Sub-stage Condenser-holder Rack-and-pinion Condenser Achromatic Abbe condenser, NA1.25 Transmitted Illumination 20W Halogen Incandescent Power 220VAC 50Hz Objective Lenses Magnification Corrections NA Cover-glass Thickness 4X Achromatic 0.10 0.17mm 10X Achromatic 0.25 0.17mm 40X Achromatic 0.65 0.17mm 100X Achromatic 1.25 0.17mm Contents Binocular head Microscope body DIN Objectives, 4x, 10x, 40x and 100x Widefield 10x eyepieces (pair) Widefield 20x eyepieces (pair) Color filters (blue, green, yellow) 6v/20w spare halogen bulb Spare fuse Power cord Dust cover Sample immersion oil
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