This is a feature-packed, research-grade, infinity-corrected inverted-microscope with a digital imaging-system. Key features include Koehler illumination and multiple phase-contrast settings. The inverted format allows for observation of liquid and irregular samples or containers, such as Terasaki plates and Petri dishes. Some of the most common uses are viewing cell and bacteria cultures, as well as aquatic microorganisms. A removable mechanical-stage with Terasaki and Petri inserts provides easy movement of specimens. The infinity-corrected optical-system includes a five-lens turret, and five bright-field, and three phase-contrast long-working-distance objective-lenses with plan field-correction and achromatic color-correction. The extreme-wide-field eyepieces include 10X with plan field-correction, and 25X, resulting in an overall magnification range of 40-1500X. The Siedentopf head features compensation-free interpupillary-adjustment, as well as dioptric adjustment. The trinocular photo-port provides a stable platform for mounting an imaging-system without the need to remove an eyepiece. The photo-port works concurrently with both eyepieces, so there is no interruption to binocular viewing. The digital imaging-system provides real-time 1080p video on an 11.6" LCD monitor at up to 60fps. Designed primarily for standalone use, the system's internal software is controlled via the included USB mouse. Photos and video can be captured, and stored on the built-in Secure Digital drive. The camera can also be connected to a Windows PC via USB, allowing for software-control with a range of editing and measuring tools. The Koehler illumination system consists of a centerable 30W halogen lamp, a field lens with iris, and a centerable, height-adjustable 0.3 NA condenser with iris. The ability to center the lamp and condenser, along with the field and aperture diaphragms, allows for highly-efficient, optimized illumination for maximum resolution. A slide-in annulus-board provides two centerable phase-contrast annuli, as well as an open setting which can be used with colored filters for band-isolation or color-correction. The 90-240V wide-voltage electrical system allows this microscope to be used in various parts of the world. Features: A research-grade, infinity-corrected inverted microscope with digital imaging-system Includes Koehler illumination and phase-contrast Perfect for clinics, vets, doctors and researchers to view living biological tissue cultures and examine specimens in liquid Nine brightfield magnification settings, 40X, 100X, 250X, 200X, 500X, 400X, 600X, 1000X & 1500X Six phase contrast magnification settings, 100X, 200X, 250X, 500X, 400X & 1000X Two pairs of high eye-point eyepieces Siedentopf trinocular head, 45 degree inclined 90-240V halogen illumination system Movable NA 0.3 condenser Low position coaxial stage movement control knobs Rugged cast alloy frame and stand with stain resistant enamel finish Manufactured Under ISO 9001 Quality Control Standard Excellent Five (5) Year Factory Warranty Specifications : Nosepiece: quintuple Head: 45° incline with Siedentopf adjustment Optical System: Infinity-corrected Optical Corrections: Plan field-correction, achromatic color-correction Eyepieces: extreme-wide-field, high-eye-point (10 plan, 25X) Brightfield Objectives: long-working-distance plan-achromatic 4X, 10X, 20X, 40X, 60X Phase-contrast Objectives: long-working-distance plan-achromatic 10X, 20X, 40X Focus Control: coaxial fine and coarse adjustment Focus Travel: 38mm coarse adjustment, 0.2mm fine adjustment (precision 0.002mm) Stage: 6.3" x 10.0" (160x250mm), fixed-height Condenser: Movable NA 0.3 72mm WD Phase-contrast Annulus Board: Centerable 4X/10X, 20X/40X, bright field Sample Holder Inserts: Terasaki holder, Petri dish holder Illumination: 30W/6V halogen bulb, adjustable filament center and brightness Power Supply: 90-240V, 60/50Hz, GS & CE certified Camera Specifications: Sensor: Sony IMX236 CMOS Sensor Size: 1/2.8" Still Resolution: 3264x1840, 1920x1080 Video Resolution: 1920x1080 Frame Rate: 60fps @ 1920x1080 (HDMI preview), up to 30fps @ 1920x1080 (USB, SD) Image Storage: SD Card Slot Exposure Time: 0.001 sec ~ 10.0 sec Compatibility: Windows (32/64 bit) XP/Vista/7/8/10 Monitor Specifications: Screen size: 11.6" Screen ratio: 16:9 Resolution: 1920x1080 Display Panel: IPS-Pro Dot pitch: 0.1338mm Brightness: 320cd/㎡