9 scientific apparatus and instruments; namely, balances, baths and circulators, burners, calorimeters, centrifuges, chromatographs, combustion apparatus, condensers, demineralizers, distilling, apparatus, evaporators, extraction apparatus, fume hoods, gas analysis instruments and apparatus, incubators, metallurgical apparatus, ovens, oxygen meters, pH meters and electrodes; quality control instruments and apparatus; namely, seam projectors, seam saws, enamel raters, computerized seam control stations, can strippers, seam height, thickness and flange width ganges, video seam monitors, can seam micrometers and countersink depth ganges, ovens, oxygen meters, pH meters and electrodes, refractometers, spectrophotometers, sterilizers, stirrers and water stills