Proprietary substances used in food preparation and nonfood compounds used in slaughtering and processing plants, namely, smoke flavoring agents, namely, natural and artificial smoke flavoring; marking agents, namely, branding inks, tattoo inks, and marking crayons; food processing substances, namely, poultry and hog scald agents, tripe denuding, bleaching and neutralizing agents, substances for washing fruits and vegetables, preflushing agents for casings, refining agents for rendered fats, rendering agents, and release agents; denaturants, namely, denaturants for meat requiring tankage and for meat not intended for human food and denaturants for poultry requiring tankage and for poultry not intended for human food; substances for foam control in soups, stews, rendered fats, and curing pickle; and substances for cleaning and treating feet and other edible animal parts for sanitation purposes; cleaning solutions and preparations for use in cleaning soak tanks, floors, walls, freezer floors, and freezer walls, and for use in steam and mechanical cleaners, acid cleaners, scouring cleaners, metal polishes, degreasers and carbon removers; laundry products; toilet and dressing room products; paint removers; antimicrobial products, namely, sanitizers; hand care products, namely, handwashing products, hand sanitizing products, hand lotions and cleaners; pesticides, namely, nonresidual and residual pesticides, rodenticides, fumigants; water treatment products, namely, phosphate products, silicate products, chlorine products, cooling and retort water products, and boiler and steam line products; lubricants, namely, soluble oils; absorbent and anti-slip agents; solvent cleaners, namely, electronic instrument cleaners and adhesives and glue removers; sewer and drain cleaners, namely, enzymatic cleaners, shell egg products, namely, general cleaners, destainers, quaternary ammonium chloride sanitizers, chlorine sanitizers, foam control products, and iodine sanitizers; and coatings for use on incidental food contact surfaces; products and equipment used in protecting public health and enhancing environmental quality, namely, food equipment, plastics, swimming pool equipment, hospital equipment, plastic plumbing products, namely, pipes, fittings, valves and joints, coatings, groutings, caulkings, sealants, lubricants, pipes and fittings therefor, water and waste treatment and solid waste handling products; drinking water systems and additives; and membrane liners for water storage

quality control and environmental health procedures and practices in the manufacturing and service industries