qq365Silver Plating, Tarniban and QQ-S-365 Grade A. Q. My company uses thin (.002) photoetched, silver plated parts on our products. Is the use of Tarniban acceptable per the Electrodeposited Silver spec QQ-S-365 [fromqq-s-365d (notice 1), federal specification: silver plating, electrodeposited, general requirements for (02 feb 2001) [ss by astm-b700]