Advanced optical technology within a small footprint. Perfect for education and routine laboratory use. Designed for years of high quality use, the BM2000 is an upright microscope with outstanding optical performance combined with elegant ergonomic touches. The BM2000 incorporates Jiangnan's exclusive infinity optical system which excels at correcting both chromatic aberration and curvature of the field of view. A new series of Plan Achromat objectives have been designed especially for the BM2000 with excellent optical corrections and very flat optical performance. This means clear, bright images at every magnification. BM2000 Infinity biological microscope Specifications Optical system Infinity Optical system Magnification 40-1500x Illumination 12V-20W halogen lamp, lamp changeable by removing the Collector unit Coarse and fine focusing Coaxial coarse/fine focusing knob Eyepiece tube Binocular/ Trinocular tube(inclination:30-,360-rotatable Siedentopf-type,interpupillary distance:47-75mm Eyepiece WF10X/-20mm-15X/-12mm Condenser Abbe condenser,NA1.25(aperture diaphragm with posi tion guide marking for respective objectives Nosepiece Quadruple/ quintuple revolving mechanism with multiple ball bearing, Infinity achromat 4x,NA0.1,10x,NA0.25,40x,NA0.65,100x,NA1.25 Dedicated objectives Infinity plan achromat 4x,NA0.1,10x,NA0.25,40x,NA0.65,100x,NA1.25 Rectangular 188X150mm surface stage mounted on the main Stage body. Cross travel 78X54mm using low-positioned X/Y coaxia l control knob Substage Adjustable vertical condenser movement range:10mm Optional accessories Phase contrast attachment,Darkfield unit,Storage case