P&G Ultra Liquid Sour Iron Remover - For Laundry - Concentrate - Liquid - 675.8 fl oz (21.1 quart) - Recommended For: Iron Deposit Remover, Rust Remover, Stain Remover - Phosphate-free, Phosphorous-free - White - 1 Carton

Ultra Liquid Sour effectively removes iron and set-in rust staining. It prevents discoloring caused by high iron content in the water supply. Super-concentrated formula contains less water, and it is free of phosphates and phosphoric acid. It is the only iron remover endorsed for use with the Tide PRO Laundry System.

Made in the USA.