Silver Print II (Conductive Paint) 1/2 Troy oz. BottleUse for PC repair or add-on circuit traces. Pure silver in acrylic lacquer based carrier may be brushed on for either conductors or shielding. Connections have equal or better conductivity than copper (0.1 ohms per square). Note: 12-Month Shelf Life 24 Hour Emergency Contact Information: Chemtrec (U.S.): (800)424-9300 Canutec (Can): (613)996-6666