Why can't you drink water from a silver cup for a long time?

Because silver reacts easily with air, it leads to the appearance of silver oxide, and a very small amount of silver oxide dissolves in water to cause harm. There are few real silver cups on the market, and the price is usually very high. Moreover, most counterfeit silver cups are usually doped with heavy metals such as lead and copper, and some silver cups are also added with substances such as toner during the production process. If the manufacturing process is not up to standard, some components may fall off or melt into water, and drinking water with this cup for a long time may have adverse effects on human health.

Precautions for selecting water cups:

1, material consideration. There are many kinds of materials for water cups, such as glass, enamel, ceramics, purple sand, plastic, stainless steel and alloy. , let you see things in a blur, don't know how to start.

2. consider the size. When choosing a cup, we should also consider the size and capacity of the cup. If you only use it at home or in the office, men can use 350ml water cups and women can use 250ml water cups. If you want to consider outdoor sports, you should not only consider greater capacity.

3. Functional considerations. Functionally speaking, whether in summer or winter, you can use water cups, drink water or drink tea. Never buy a double-layer thermos cup in summer. Consider using glass or ceramic cups. It is recommended to buy a double-layer vacuum steel thermos cup for use in winter, and there is a special cup for easy opening in the car.