Scientific and educational laboratory equipment and supplies, namely, physics, chemistry, biology and geology products, namely, microscopes, microscopic slides, magnifying lenses, microscope lenses, non-medical thermometers, photometers, respirometers, electrodes, voltmeters, ammeters, galvanometers, electrochemistry meters, electric sensors, hydrometers, hygrometers, refractometers, dynometers, pyrometers, psychrometers, sonometers, multimeters, radiometers, calorimeters, anemometers, haemometers, spherometers, magnetometers, viscometers, temperature and humidity controllers and monitors, spectrum tubes, spring balances for weighing, magnets, magnetic compasses, optical mirrors, pipette tips, pipette racks, test tube supports, test tube racks, test tube brushes, test tube holders, thermometer storage racks, burette clamps, beaker tongs, calipers, scalpels, safety goggles, gloves, crucibles, petri dishes, optical mirrors, microscope lenses and prisms, spectrometers, spectroscopes, PCR tubes and plates, and tubing specifically adapted for laboratory use made of plastic, glass, and copper; laboratory glassware, namely, flasks, reagent bottles sold empty, beakers, condensers, burettes, pipettes, graduated cylinders, glass vials, and separating funnels all used for scientific purposes; laboratory plastic ware, namely, flasks, wash bottles, beakers, flasks, vials, funnels, test tubes, and graduated cylinders all used for scientific purposes; physics experimentation kits, namely, density and mass sets comprising test weights, weighing equipment, namely, scales and balances; laboratory equipment, namely, mineral, rock and alloy sets comprised of mineral and rock specimens and charts for educational use in the laboratory