Easy-to-use testing system is popular among professionals as well as hobbyists.  Instructions are included.  The mini 5-grain solid 999 silver bar is great to practice testing; also great for bullion collection.  Instructions are included with the sealed box of acid solutions.  Ideal for testing jewelry and coins from pawn shoppes, flea markets, web auctions, scrapp jewellery, ring settings, jewelry design & repair pieces and more.