Completely immerse the parts to be passivated in the solution for a period sufficient to remove all free
iron and contaminants from the surface. This is typically 5-20 minutes, depending on temperature, grade
of stainless steel, hardness, use of ultrasonics, and the condition of the surface of the parts. This should
be determined by testing with your product. Rinse the parts thoroughly with clean water, flowing water is
optimum. DI water may be used to prevent water spotting. Dry completely in air immediately. Drying
can be accelerated by use of a hot air oven or other drying medium to attain a highly passive surface.