Bidspirit auction | New silver testing acid set....

New silver testing acid set.... - *Silver testing set includes a wooden box for the workbench. *The details of the silver testing set include: 1. Wooden storage box for the acid, Round pick and pick handle. 2. Round pick 10 cm long. 3. Pick handle 8 cm long. 4. Silver test cartridge. Instructions for use: The test object (jewelry, trinkets, collectibles, etc.) should be rubbed a little upon collection. Remove a small layer from the test area for a more accurate test. 1. 999 pure silver, the color test result on the test object is light red (shiny). 2. 925 sterling silver, the color test result on the test object is dark red. 3. Silver 900 purity, the color test result obtained on the test object is dark red (burgundy). 4. Silver 800 purity, the color test result obtained on the test object is brown. 5. Silver 500 purity, the color test result obtained on the test object is green. 6. Nickel silver (German silver), the color test result obtained on the test object is dark blue. The item has been tested and approved by the auction house.