Suggestion may be sent to the Statewide Interoperability Coordinator, Jim Stromberg, at James.Stromberg@state.mn.us. Definition of Interoperability. Interoperability is the ability to communicate, as needed, on demand, and as authorized at all levels of government and across all Public Safety disciplines. The need for communications interoperability is a significant public safety issue for citizens and emergency responders readily recognized by our local public safety officials.
Other ID Marks. 1) Tarnish. On a freshly broken surface, the color is bright metallic-white. Upon prolonged exposure, it tarnishes black, brown to gray, and dark yellow.2) Silver is the best conductor of electricity. Complex Tests. Dissolves in nitric acid and and sulfuric acid.ilver can be found pure, but is usually mixed with small amounts of gold, arsenic, and antimony. A natural alloy of gold and silver is known as Electrum, and is usually classified as a variety of Gold. Silver is a very resistant mineral. It does not dissolve in most solvent s, and won't react to oxygen or water.
Silver acid: silver acid is a reddish color that changes based upon the purity of the silver. Your test will tell you what colors to look for. Mine has 90-100% as dark red, 80-90% as light red or brown and 65-75% as light green. Since sterling silver is 92.5% silver, it turns a dark red with my kit. Using 18K gold acid to test silver: You can use 18K gold acid on a silver scratch test and it will turn light blue. It does not appear to be able to tell you the difference between 800 silver and sterling though. *An update - with my current 18K acid it appears that sterling silver turns from light blue to white if you let it sit for a bit.