Metal Guard 800 is a clear, non-flammable, mildly alkaline liquid which is used in metal finishing processes for protecting ferrous metals against rust during an “in-process” operation. Metal Guard 800 may be used in immersion operations, power wash machines and vibratory tumbling flow-through systems. Metal Guard 800 does not contain any inorganic salts; therefore, no powder residues are left on the surface of the metal.