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Jul 24, 2014· The Acid Test. All precious metals can be tested through the use of an acid test that will only harm fake materials. Genuine gold will stand up to your attempt to conduct a nitric acid test at home. Make a tiny mark on the piece of gold to penetrate the surface. Drop a small amount of liquid nitric acid on that scratch and wait for a chemical ...


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Gold, Silver, Platinum Test Kits The basic gold testing procedure is to make a small scratch test of the sample metal you are testing on the test stone. Drop a few drops of the test acid on the sample and observe it. If the quality of the gold is equal to or greater than the karat quality rated on the test acid the acid will not effect the sample.


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Gold Testing Acid Kit – which may include either hydrochloric and nitric acids along with a dropper, or particular samples for each type of gold Karat acids (10K acid, 18K acid, 22K acid, etc.) Black Gold Testing Stone – you must thoroughly rub it with a 320 grit sandpaper, wash and rinse it …


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Using a gold test kit to determine to purity of gold.


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Jun 18, 2010· Hi, 2antiquarians, the heft test is an indication but unfortunately not a proof; I would confirm it with an acid test. 320090, There are cheap testing kits around (six bottles + 2 stones + +), but I don't recognize the labels on the bottles and the solutions may or may not be of good quality. I think I recognize the gold testing kit in listing ...


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Black acid testing stone that is washed thoroughly with water prior to each test. Test Acids. Gold testing needles with solid gold tips used for comparison with test pieces . Separate tests are applied for each type of metal, as identified and described below. To Test For 10k, 12, 14k. Scratch the gold piece to be tested on the stone.


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