This professional trinocular compound microscope provides phase contrast/brightfield microscope system and a super speed 18MP USB 3.0 digital imaging system. The compound microscope features an optical system for simultaneously observing images through eyepieces and an adjustable trinocular port. It comes with LED illumination with variable intensity, Abbe NA1.25 condenser with iris diaphragm, a complete set of phase contrast objectives and turret mounted phase plate assembly. The 4912x3684 pixels USB digital imaging system that captures still microscope images and live video on computer. The included software is compatible with Windows, Mac OS X and Linux operating systems (see version information below). The Windows software can also be used to make measurements. It offers six levels of brightfield magnification from 40X to 2500X. The phase contrast kit includes a phase contrast condenser, a centering telescopic eyepiece, four phase contrast objectives: PH10X, PH20X, PH40X (S), PH100X (S, Oil). It also offers magnification power: 100X-200X-250X-400X-500X-1000X-2500X. This phase contrast compound microscopy is widely used clinical, biological research and schools, specially for observing live cells.