XPL-3200/XPL-3230 Series polarizing microscopes are appled to differentiate component of matters that have birefraction characterist, as a sort of import tool in pharmacology, geognosy, mechanism, metallurgy to research crystal, mineral, rock and metallurgical form. The instruments are adopted excellent UIS optical system, equipped with strain-free long working distance plan achromatic objectives and wide field eyepieces, high precision rotatable polarizing stage and excellent accessories. They can be used in the mode that transmitted and transmitted / reflected to obtain nicer polarizing image. These productes have good sculpt and steady mechanical structure, so that operate comfortably and expediently. They are the ideal instruments for factory, mine, scientific research and university to check , research and teaching demo.