ACRtec Rust Converter & Inhibitor was developed and created to dissolve and convert rust into a rust preventative compound. ACRtec Rust Converter & Inhibitor removes rust from iron, steel, aluminum, copper, and brass. It also removes rust stains from other substrates including wood, painted surfaces, glass and porcelain. When reinforcement steel is found exposed within a concrete application and a TechCrete 2500 Waterproofing System Limited Labor and Material warranty is to be issued, ACRtec Rust Converter & Inhibitor is required to be used to protect the reinforcing steel prior to the application of any TechCrete waterproofing products.