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2. Jewellery cleaning - Wikipedia

   en.wikipedia.org/wiki/Jewellery_cleaning

   Ultrasonic cleaner showing the removable basket in place, and a closeup of the light and timer. Ultrasonic cleaners are useful for jewelry cleaning and removing tarnish. They use ultrasound waves and chemicals combined to create bubbles that "cling" to the foreign particles such as dirt, oil, and unknown substances.

3. How to Clean Copper: 3 Methods That Actually Work - AOL

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4. Conservation and restoration of copper-based objects

   en.wikipedia.org/wiki/Conservation_and...

   The conservation and restoration of copper and copper-alloy objects is the preservation and protection of objects of historical and personal value made from copper or copper alloy. When applied to items of cultural heritage , this activity is generally undertaken by a conservator-restorer .

5. This Is Why Your Skin Turns Green After Wearing Certain Jewelry

   www.aol.com/why-skin-turns-green-wearing...

   Take off jewelry when swimming and cleaning. Buy stainless steel or platinum jewelry, or jewelry made from precious metals like sterling silver or solid gold. Quince Bold 14k Gold Hoops

6. Conservation and restoration of silver objects - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Whether silver plating or pure silver, the composite of the metal will tarnish when exposed to air and sulfur. Tarnish is a chemical reaction on the surface of metal (copper, brass, silver, etc.) and causes a layer of corrosion. In the case of silver tarnish, the silver combines with sulfur and forms silver sulfide (Ag 2 S), which is

7. Conservation and restoration of lacquerware - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Wet cleaning is the process of further removal of dirt, grime and residue from the surface of the object that is not successfully removed by dry cleaning. Testing of various solvents should be done prior to wet cleaning the surface of the object in order to prevent possible damage to or removal of the original lacquer surface. [ 16 ]

8. Tarnish - Wikipedia

   en.wikipedia.org/wiki/Tarnish

   Tarnish does not always result from the sole effects of oxygen in the air. For example, silver needs hydrogen sulfide to tarnish, although it may tarnish with oxygen over time. It often appears as a dull, gray or black film or coating over metal. Tarnish is a surface phenomenon that is self-limiting, unlike rust. Only the top few layers of the ...

9. Your Kitchen Sponge Is Dirtier Than You Think—Here's ... - AOL

   www.aol.com/lifestyle/kitchen-sponge-dirtier...

   According to USDA, cleaning a sponge in the dishwasher kills 99.98 percent of the bacteria. Materials Needed: Sponge, Dishwasher detergent, Dishwasher Step 1: Place the sponge on the top rack of ...