as a preconditioning agent and anti-rust Formula PB Polisher Brightener Ultrasonic Cleaner Designed for the polishing treatment of metal surface components, this liquid acid product is engineered to cavitate and de-gas efficiently. Formula PB is fully water rinseable, and serves treatment for aluminium, steel and stainless steel. Dilute with water to give a 5 - 20% solution concentration before use. Ambient - elevated temperatures will reduce process time (recommended 70°C max). • Removes oxides, shop soils, flux, and welding spatter from aluminium, steel and stainless steel • Descales limescale • Preconditions aluminium, steel and stainless steel • Anti-rust treatment for aluminium, steel and stainless steel • Light rust removal