Prep-Step will soften and help remove loose rust particles, while solidifying the tight rust left behind. Prep-Step also phosphatizes the surface and adjusts its pH to 6, both of which are ideal conditions for paint adhesion. Prep-Step adjusts the pH and phosphatizes the surface, thus forestalling flash rust. So if you have a project that has been dipped, stripped or sandblasted and you can't get it painted for a period of time, Prep-Step powder, dissolved in water, sprayed on and allowed to dry, will give you that holding period before coating. Available in 1.5 lbs.
Typical application is with a pump up garden sprayer.
Prep-Step will help you remove dirt, grime, greases, oils, and silicone from steel surfaces. It is not harmful to sound painted surfaces . Apply with spray bottle or pump up tank sprayer. On raw non-rusted steel, simply allow the solution to dry. On rusted steel, allow full soaking of the rust.