Profile: National Microscope Exchange specializes in providing microscopes, refractometers and polarimeters. We offer fully automatic polarimeter with jacketed flow sample tube. It includes funnel and temperature sensor for jacket. Our 200 mm observation tube comes with 2 end caps, 2 deck glasses and 2 rubber packings. Brix hydrometers are calibrated to show the percentage of sucrose by weight at 20°C. Fiber optic light features 20 W of fiber optic illumination, heavy duty all-metal, convection-cooled design which is ideal for equipment lighting where vibration or noise is a consideration and single & bifurcated gooseneck light guides. Our microscopes include inverted microscopes, metallurgical microscopes and stereo/dissecting microscopes.