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testing silver with 18k acid

24 Apr 2017 Rub the material your wish to test alongside the real gold sample leaving a similar mark. Use the acid in the touchstone gold testing kit. Apply the acid to each mark on the touchstone, starting from the lowest Karat acid. Observe the reaction of each marking and compare with the color sheet provided with the kit.
20 Jul 2012
How to test for gold, silver and platinum. The acid test. Advice on testing gold, silver and platinum from the leading manufacturer of precious metal testers. . A. I'm red-green colour-blind and I have included special instructions explaining what the "colour change" looks like to me, our acids do not require you to see the
Next, put on protective gloves and place a drop of acid from the 18k gold testing bottle over the small notch. A highly effervescent green reaction indicates base metal, and no further testing is required. If there is little or no reaction, the piece is likely karat gold, and the next test is for purity.
Work your way up to the 22k solution until you find one that does not dissolve the gold. At that point you know that the test mark is equal or higher than the solution. MORE ACCURATE TEST: If you must determine more accurately the gold karat, you must use a combination of the acids and gold testing needles.
The first step in testing gold is always the magnet test. If the item attracts to a magnet even just slightly it is not real gold, silver, palladium or platinum. These precious metals are non-ferrous meaning they are not magnetic. If your item is magnetic it means there is no reason to test it with acid.
12 Jun 2014 Learn how you can quickly and easily value your products or possessions: don't be fooled by the gold buyer at the counter, you need to know the real value BEFORE you decided to buy or sell! In the following instructions we will give you the basic knowledge to begin to practice using acid testing kits to
5 half ounce bottles of test solution; 1 Economy Test Stone to use with the solutions; 1 Basic Instructions explaining how to do the test; Our Bottles have no drip tips to reduce the chance of accidents. Shipped UPS Ground. Can not be shipped to PO Boxes. It is illegal to ship by US Postal Service. 6 new from $9.79
5 Mar 2010
The scratching and testing is repeated with the 18K solution and the 22K solution (if available) until the karat of the object is determined. For test solutions, see Precious Metal Test Acids. Remember that when the solution being used dissolves the scratch slowly and leaves rusty color particles it is probably two karats lower

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February 2018