what slows down tarnishing on silver?
912323
Keeping it away from sulfides, which are present in many foods and to some degree in the atmosphere.  Keeping it in a sealed cabinet will help.
792118
As copper is more reactive than silver it will give up its two electrons to silver ions so when is really happening is:-\n\n2Ag+  + Cu → Cu++ + 2Ag\n\n(The nitrate ions (NO3‾) are passive)
819097
Erm dont know if this will help at all, my wonderful fountain of knowledge (aka my wife) has suggested that you gently rub some baby oil on it, apparently it removes scratches from silver finishes and also cleans it, its certainly knowledge to me, but she normally surprises me with her vast amount random information.\nAlso nice and cheap, hope it works for you, and if it does please can you let me know.\n\nGood Luck
265632
I'm not sure what the black silver salt you're talking about is, but yes, you can produce Ag(s), the metal, from a silver salt. You need something that will oxidize, so that silver will reduce to Ag(s).
284044
Try changing the pH of the system and lowering the voltage.  If those don't help go the other way.\n\nhttp://www.cehs.siu.edu/Chemical/silver_waste.htm\n\nhttp://www.p2pays.org/ref/01/00048.htm\n\nhttp://www.finishing.com/73/82.shtml
339176
The result is Ag2S: Ag+ is monovalent, S2- is the sulphide ion.\n\nA solid silver surface will blacken (slowly) when exposed to material containing bound (negatively charged) sulphur atoms (such as the amino acid cystein and proteins containing it). Dissolved silver will precipitate.
567905
Check your spelling.\nAssuming you're talking about Masson stain, a.k.a. Fontana-Masson stains, it'd be for melanin.  Melanin reduces ammonia-silver nitrate and turns black\nCheers.
562021
If you don't have time to brush your teeth, suck on stainless steel silverwear. Works kind of like those stainless steel soap bars you use to get the garlic smell of your hands.
219246
You might try different solvents. Such as carb cleaner or lacquer thinner. I'd try on a part you won't see when the telescope is fully assembled. If all else fails use a wet sand paper and re paint. The factory finish is usually a baked on type that lends itself well to cleaners. You might also think of using a green scrubby. Although this might dull the finish. You might then wish to recaot with a gloss or satin clear designed for metal. Good luck in your endeavor.
1157885
There are a vast number of water soluble corrosion inhibitors.\n\nAt the simple end of the scale - Sodium nitrite, sodium tolytriazole, zinc phosphate, borates, molybdates, vanadates and chromates all inhibit rust.\n\nThere are also proprietary organic compounds (some phosphate esters, ethanolamides, etc) also inhibit rust.\n\nIt all depends on whether you want the inhibition to be short lived or long lived (nothing is "permanent") and whether the inhibition is an "in use" inhibitor (like, say, a corrosion inhibitor in cooling water) or "static" (like phosphate "rust converters" used prior to painting.
256046
I recommend you get some clear nail polish, or the clear nail hardener polish and just kind of brush the necklace/bracelet/ring/whatever.  It usually helps for a while until it wears and you have to do it all over again.  But it can help for up to months.  Just don't smother your jewelery.
665994
Silver is the tradition
207080
I would take it to a professional appraiser and ask what he/she says first, but I have been watching Antiques Roadshow for many years and it seems to me that they always tell people NOT to polish their metal antiques because dealers and collectors really like the patina.
548563
try Zinc.....sacrficial protection (galvanizing)\n\nyou can also use aluminium, it will react at first but then it will form a tough protective layer of aluminium oxide, which prevents further reaction....it really works
42156
It is very easy to clean copper jewelry and keep it a beautiful copper color.  You don't have to have a store-bought cleaner, you can use things that can easily be found around the house in most any kitchen; vinegar, lemon juice, or ketchup!  (Click this link White Tiger Tracks Store to go to my  store where you can find great copper rings, necklaces and bracelets like my His & Hers Copper Baby Boomers Bracelets )\n\nPlace your copper jewelry in a glass, or plastic container, not metal.  I use a drinking glass.  Pour enough vinegar over it to completely cover it.  Let stand for 5-10 minutes.  Rinse.  Dry.  You're done!
479031
If you ever do any study on silver purification it will help you to understand this scripture. It is a maticulous process where the refiner has to sit and watch the silver for the perfect amt of time, making sure to pull it out of the fire at the right time so the precious metal will not be destroyed. We are the precious metal, God is the refiner.
812205
Put a metal which has higher activity than Silver