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2. Conservation and restoration of silver objects - Wikipedia

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

   The following sections include home methods that use commonly available household items such as water and salt to clean the surface of silver. Some of the methods use heat which may be dangerous to silver tableware such as candlesticks or knife handles. Water trapped in crevices of silver objects can accelerate tarnishing. [15]

3. Here’s How to Clean Silver Jewelry the Right Way (And ... - AOL

   www.aol.com/lifestyle/clean-silver-jewelry-way...

   Below, we tapped two experts for everything you need to know about how to clean silver jewelry like a pro, plus some tips on how to pre. Silver jewelry is stunning, always trendy and versatile ...

4. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes and fittings.

5. 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. Historically, objects made from copper or copper alloy ...

6. Sodium bicarbonate - Wikipedia

   en.wikipedia.org/wiki/Sodium_bicarbonate

   Sodium bicarbonate (IUPAC name: sodium hydrogencarbonate[ 9 ]), commonly known as baking soda or bicarbonate of soda, is a chemical compound with the formula NaHCO3. It is a salt composed of a sodium cation (Na +) and a bicarbonate anion (HCO 3−). Sodium bicarbonate is a white solid that is crystalline but often appears as a fine powder.

7. Lime softening - Wikipedia

   en.wikipedia.org/wiki/Lime_softening

   Lime softening. Lime softening (also known as lime buttering, lime-soda treatment, or Clark 's process) [1] is a type of water treatment used for water softening, which uses the addition of limewater (calcium hydroxide) to remove hardness (deposits of calcium and magnesium salts) by precipitation. The process is also effective at removing a ...