Special chemical acids remove rust and leave a protective coating that prepares the surface for painting. Submerge parts in a warm vat of this product undiluted or diluted up to 3 parts water to 1 part of this green liquid material allowing one hour to soak, remove and allow to dry. The material can also be brushed or sprayed on, left to react to the metal and be allowed to dry. Fish and seafood houses use this to brighten their storage areas. Removes heat scale, tarnish, oxides, and rust from iron and steel parts without tedious brushing and scraping. Agriculture, marine, oilfield, automotive, bridge contractors, railroad companies and more can use this very low foaming product.