People pay attention to water quality, and also pay great attention to drinking tools. So, what kind of drinking cup should I choose?
With people's attention to drinking water health and the strengthening of supervision by relevant state departments, the quality of drinking water products has improved. However, people ignore or even misunderstand the health and safety of drinking cups used in daily life, so people should pay attention to the safety of drinking cups.
First of all, from the material of water cup, glass is the safest and enamel cup is safer. Ceramic cups are best natural cups, while plastic cups have more hidden dangers.
Director Li said: "Glass is made of inorganic silicate and contains no organic chemicals." So glass is the safest and easy to clean.
"The enamel cup is made of thousands of degrees of high temperature enamel, and it does not contain harmful substances such as lead, so it is easy to carry and clean."
The inner wall of a ceramic cup is usually coated with a layer of glaze. When the cup is filled with boiled water or drinks with high pH, some aluminum elements and other heavy metal elements in the glaze are easy to precipitate and dissolve in the liquid, which is harmful to human health. Therefore, when using ceramic cups, it is better to use natural color cups instead of cups coated with colorful glazes.
Plastic cups are loved by many people, especially children and teenagers, because of their changeable shapes and bright colors. Experts are worried about this phenomenon. "Plastic is a polymer chemical material, which usually contains toxic chemicals, such as polypropylene or polyvinyl chloride." When hot water or boiled water is put in plastic cups, these toxic chemicals can be easily separated into water. "In February last year, the US Consumer Product Safety Commission recalled a batch of domestic plastic drinking cups because they contained toxic substances. If you buy a plastic cup, you must choose a food-grade plastic cup that meets national standards. "
Another reason for not advocating the use of plastic cups is that plastic cups are easy to breed bacteria and are not easy to clean. "The plastic surface looks smooth. In fact, its internal microstructure has many pores, in which dirt is easy to hide. "
Secondly, for the "function cup" advertised by some merchants in the market, consumers should clearly understand the principle of "function" and make rational choices.
Experts said: "The so-called functional cup refers to a functional material that can change the micro-physical structure of water during the processing of the cup, so that the water contained in the cup presents a certain functional effect." At present, there are mainly two kinds of functional cups on the market, namely, magnetized cups and energy cups.