Inverted Optical Fluorescent Microscopeis very useful for observing living cells or organisms at the bottom of a large container like a tissue culture flask, under more natural conditions than on a glass slide. Also designed for cell culture observation, to get details of cell growth process, internal  spontaneous fluorescence phenomenon, living cell fluorescence transfection, protein transfer, etc. In addition, it can be used in micromanipulation applications where space above the specimen is required for manipulator mechanisms and the micro tools they hold, and in metallurgical applications where polished samples can be placed on top of the stage and viewed from underneath using reflecting objectives. This microscope has new generation of infinity color corrected optical system, professional plan semiapochromatic and fluorescence objectives that delivers a sharp and bright fluorescence image.