Scientific instruments and apparatus, namely, spectrometers, spectral analyzers and integrated optics, microscopes, titrators, nebulizers for scientific or laboratory use, distillation apparatus for scientific or laboratory use, and instruments that measure particle size, zeta potential, molecular mass, transmittance, refractive index, laser diffraction, molecular weight, and/or pH; Material and surface testing instruments, namely, instruments for testing indentation, lateral force, scratch, fatigue, and/or wear of surfaces, coatings, membranes, thin films, biological materials, and material interfaces; Testing instruments for use in the petroleum industry, namely, emulsifiers, penetrometers, grease workers, and instruments for testing oxidation stability, cold flow properties, flash point, cold filter plugging point, cloud point, pour point, consistency, ductility, softening point, breaking point, ductility, foaming characteristics, and/or gum content; Testing equipment for use in the food industry, cosmetics industry, flavors and fragrances industry, and pharmaceutical industry, namely, penetrometers and instruments for testing flash point, oxidation stability, and/or softening point; Testing instruments for the physical characterization of solid and porous materials via gas sorption for physisorption and chemisorption, gas pycnometry for measuring skeletal densities of solids, bulk and tapped density testing, mercury porosimetry for macropore characterization, and vapor sorption and capillary flow porometry; and accompanying computer software, namely, computer operating software sold as a unit with each of the instruments listed above for use in scientific laboratory operations