Color measurement spectrophotometers; Colorimeters; Color measurement software; Color measurement scientific instrumentation; Visible range spectrophotometers for measuring color; Software for use in color space conversion; Color management software for use in converting color between different color spaces; Color space converters for use in color grading and color correction; Optical measuring instruments, namely, color difference equation meters; Computer software for use with color measurement apparatus, namely, with electronic spectral measuring devices for use in optical analysis of colors, including measurement of color differences, all in the field of printing, graphics, and science; computer software for showing color differences, for use in the field of textile, paints, plastics, printing, petroleum, edible oils, water and wastewater, building supplies, concrete, stone, and aggregate products industry; Electro mechanical measuring equipment, namely, a scientific apparatus for determining color differences in paste and liquid products, namely, in paints, inks, cosmetics, pharmaceutical products in the nature of drugs, and food; computer software for measurement of color and color differences in quality control; Color difference meters; Test equipment and instruments for use in the analysis and measurement of colors, color differences, and appearance properties of materials, namely, colorimeters and color profile recorders; software for performing color difference equations; Computer software for performing shade sorting, grouping and taper of textile and building products based on lightness, hue, and appearance; Appearance measurement spectrophotometers for excluding gloss from the reported color coordinates; Optical measuring instruments for non-contact continuous measurement of moving products such as glass, plastic films, pellets and extrusions, food, painted sheet, coil metals, powders, and granular products, featuring software for calculating color differences and generating graphs for color consistency and trending at static or varying distances from the optical measuring instrument