<http://schema.org/description>
"We are doing nickel electroforming on copper molds. Before plating, we etch the copper molds using phosphoric acid. We have discovered that we have phosphorus contamination in our nickel plating solution. Is there a way to remove this contamination?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/contamination-in-nickel-tank>