Before using any of the Etchdrop neutralizing fluids, rinse off the cleaning fluid thoroughly with clean water. Then apply the appropriate neutralizing fluid to remove any of the residual acidity of electrolyte. If your work has tendency to form a white “frosting” on the metal surface, the Etchdrop neutralizing products reduce this. As the white frosting can occur after many days, it is important to use your neutralizing fluid as soon as possible after marking.A custom-blended, near-neutral solution that will encapsulate any residual oxides or electrolytes from the surface of the parts being marked, therefore preventing corrosion or staining. As electrochemical etching involves an aggressive chemical reaction, it can be an initiation site for future corrosion. Thus, all etched parts must be neutralized after the etching process takes place.