Ready to use solution Silver Nitrate 10% (for use in histology and/or cytology for impregnation of tissue sections. As etchant for Bi (s - min); all Pb and Pb-Sb alloys, hard lead, high Pb-containing white, sliding, letter and bearing metals (s-min, wipe etching); with nitric acid as depth etch for pure Cu, Cu grades and Cu alloys.