Scientific and educational equipment and supplies, namely, physics, chemistry and biology products, namely, microscopes, optical mirrors, magnifying lenses, lenses for microscopes, photometers in the nature of a tool used to measure light intensity, respirometers in the nature of a tool used to measure the rate of respiration of a living organism, plant photosynthesis analyzers, electrodes, voltmeters, ammeters, galvanometers, electronic magnetostrictive equipment, namely, a wave generator, wave sensor and wave analyzer, ripple tanks in the nature of a tool used to demonstrate the principles of wave mechanics, spectrum tubes, spring balances for weighing, force tables for use in laboratories to determine the vector sum of the different forces, magnets, magnetic compasses, pipette tips, pipette racks, test tube supports, test tube racks, test tube holders, thermometer storage racks, burette clamps, beaker tongs, cork borers, vernier calipers, crucibles, laboratory glassware, namely, flasks, laboratory apparatus, namely, reagent bottles sold empty, beakers, condensers, burettes, pipettes, measuring cylinders for measuring volume, and separating funnels all used for scientific purposes, laboratory plastic ware, namely, flasks, wash bottles, beakers, filter funnels, separatory funnels, test tubes, graduated cylinders and measuring jugs all used for scientific purposes, physics experimentation kits, namely, density and mass sets comprising test weights, weighing equipment, namely, scales and balances, and laboratory plastic ware, namely, graduated cylinders, scientific kits in the fields of life science, earth science, physical science and chemistry comprising laboratory apparatus, namely, magnifying lenses, thermometers, magnets, compasses, funnels, dispensing bottles, test tubes, droppers, laboratory equipment, namely, microscopic slides, scalpels, chemical solutions and instructional manuals