Smart Add is a liquid indicator substance and integrated color indication for a real time verification of cleaning processes in the food and beverage industry. Smart Add is an intelligent color indicator substance base on persulfate technologies. This patented technology provides dissolution properties for organic deposits like proteins, fats, saccharides, aromas, phenol compounds, and oxalates by means of oxidation by hydroxyl radicals. It is utilized to detect organic deposits in product piping systems, tanks, heat exchangers or filling lines by means of a color indication system.