Don't think that the glass is only transparent and beautiful. Among all the cups made of materials, the glass is the healthiest. Professor Li Fuxing, director of the Healthy Water Professional Committee of the China Association for the Promotion of Medical Care, counted the characteristics of glass cups: the glass cups do not contain organic chemicals during the firing process. When people drink water or other beverages from glass cups, they don’t have to worry about chemical substances. It will be drunk into the stomach, and the surface of the glass is smooth, easy to clean, and bacteria and dirt are not easy to breed on the wall of the cup, so it is the healthiest and safest for people to drink water from a glass. In addition, experts also advocate the use of enamel cups, because enamel cups are made after enamel at a high temperature of thousands of degrees, and do not contain harmful substances such as lead, so they can be used with confidence.
But for cups made of other materials, experts have raised doubts. Colorful ceramic cups are very pleasing, but in fact there are huge hidden dangers hidden in those bright pigments, especially the inner wall is coated with glaze. When the cup is filled with boiling water or beverages with high acidity and alkalinity, these pigments Toxic heavy metal elements such as lead in the water are easily dissolved in the liquid, and people drink the liquid with chemical substances, which will cause harm to the human body. Plasticizers are often added to plastics, which contain some toxic chemicals. When hot water or boiling water is used in a plastic cup, the toxic chemicals are easily diluted into the water, and the internal microstructure of the plastic has many pores. Dirt is hidden in it, and if it is not cleaned, it will easily breed bacteria. Therefore, experts remind that when purchasing plastic cups, be sure to choose water cups made of food-grade plastics that meet national standards.
