The 40X-2500X trinocular compound siedentopf LED microscope provides both brightfield and darkfield microscope system. The darkfield microscope features an optical system for observing images through eyepieces and an adjustable trinocular port. The biological microscopy comes with swiveling trinocular head, body frame, reversed quadruple nosepiece, two pairs of widefield eyepieces, four DIN achromatic objectives, large double layer mechanical stage, LED transmitted illumination system and brightfield Abbe NA1.25 condenser & an oil darkfield NA1.36-1.25 condenser plus 100X objective with iris diaphragm. All lenses are made of high quality optical glass. The high resolution image in the field of view is crystal clear and will satisfy the demands of professionals. This darkfield compound microscopy is ideal for professionals and also affordable for students.