Why does silverware turn black? What happened with the air? Many people don't think about it and tell me that it is oxygen! wrong! It is actually sulfur in the air. Silver and oxygen do not react at room temperature, even if the silver oxide formed by the reaction is white, the blackening of the silver is obviously not silver oxide; silver at room temperature and sulfur can directly reflect that the formed silver sulfide is black. This is the principle that ancient emperors used silver needles to test poison before eating. The ancient poison was mainly arsenic. The main component of arsenic was arsenic sulfide; this is also the reason why sterling silver jewelry should not touch perfume, sulfur soap, etc.! It is also recommended that friends who are engaged in chemical work must choose to wear silverware to absorb sulfides for your skin! Classification of silverware: Silverware can be divided into different according to the production process: 1. Traditional silver - no artificial plating purity meets the national regulations for sterling silver jewelry, purity includes S990, S999, the main categories are adult bracelets, most baby bracelets, most baby silver locks; 2. Process silver - there is artificial silver plating in accordance with the national regulations of pure silver jewelry, the coating is palladium alloy or platinum, the purity is S925, the main categories are rings, necklaces, bracelets, some precision bracelets, lock bags. Silverware maintenance: 1. Wipe with toothpaste: Advantages: make the silverware quickly return to light; Disadvantages: lighten the silver decorative pattern; Although the toothpaste is a paste, it is actually composed of fine particles. Wiping with toothpaste is equivalent to polishing the jewelry. Therefore, the process silver must not be cleaned with toothpaste, because the plating will be thrown away, so that the silver decoration will oxidize faster! 2. Wipe white vinegar and alcohol: The black silver sulfide is dissolved in the ester acid, and the silver jewelry is once again shiny with cotton vinegar and alcohol. 3. Overnight tea soak: Soak the oxidized silverware with the tea after a night of immersion. Soak for about 12 hours. Remove the water and rinse it to remove the silver oxide, so that the jewelry will be bright again. 4. Coke soaking: This is the way to witness the miracle: soak the oxidized silverware with a small amount of cola (small half bottle, local tyrants can choose to buy a new bottle), soak for about 12 hours, remove the water and rinse, you can make the silver decoration look like new! This method is most suitable for craft silver, especially necklaces, bracelets, or hollow jewelry, which has a miraculous effect on the dirt in the gap! 5. Rub the silver cloth: It removes silver oxide from the surface of the jewelry, just like toothpaste! Do not clean the silver cloth because there is polishing powder on the surface of the silver cloth. 6. Wash the silver water: You can buy it or go to the jewelry store to clean the jewelry with silver-washed water. The effect is very obvious, but because it does not have much benefit to the silverware and the body, it is not recommended. Well, it’s almost the same, just a few more mouths! Jewelry and clothing need to be maintained, three-point wear, seven-point maintenance. I believe that everyone will not put the clothes they wear directly into the closet when they change seasons. Instead, they should be cleaned and dried before being placed in the cabinet. The same is true for jewelry, and it must be sealed and preserved! Of course, there are a lot of lazy people. Many of my friends said that they didn’t know that the jewelry was left black or yellow after a year, and they could only choose to throw it away! I will tell you how to make your silver jewelry come back to life. First buy an egg tart, don't misunderstand you, don't make a joke, buy an egg tart, eat it first, and leave the tin foil wrapped in egg tarts to clean; Open the fire and put it on the pot and pour it into the water. I am not joking with you. It is really not cooking or surgery! Wrap the yellow or black unstained silverware with tin foil, then put some salt and cook in a boiling pot for 5 minutes; Take out the silverware and rinse it off with water. Boys' shirt features a classic button-front, turn-down collar, chest pocket, and adjustable cuffs. The shirt is full comfort cut from wrinkle-resistant soft poly/cotton blend fabric. It is crafted with a rounded bottom for easier comfort in tucking it in and wear. The dress shirt is easily to match a fashion neck tie and pocket square. It is featured in several striking colors of black, burgundy, ivory, light grey, purple, red, royal blue and white. Also, custom material and color are available. 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