Shouxuan glass
First of all, glass is the healthiest
Among all the cups made of materials, the glass is the healthiest. This kind of glass contains no organic chemicals in the firing process. When people drink water or other drinks from glasses, they don't have to worry about chemicals being drunk into their stomachs. Moreover, the glass surface is smooth and easy to clean, and bacteria and dirt are not easy to breed on the glass wall. Therefore, it is the healthiest and safest for people to drink the water in the glass.
However, although glass contains no chemicals and is easy to clean, users can easily burn themselves because of the strong thermal conductivity of glass materials. If the water temperature is too high, the glass may burst, so try to avoid holding hot water.
In addition, the cup is affected by static electricity such as computers and cabinets, which will absorb more dust, bacteria and germs and affect health for a long time. To this end, experts suggest that it is best to provide a lid for the cup and keep it away from computers and other electrical appliances. At ordinary times, keep the indoor air circulating, open the window for ventilation, and let the dust come out with the wind.
Second, the choice of ceramic cups
Ceramic cups coated with colorless glaze are also a good choice, especially the inner wall should be colorless. This material is not only safe and resistant to high temperature, but also has a good thermal insulation effect. Drinking hot water or tea is a good choice. However, colored glazed ceramic cups contain substances harmful to human body and should not be selected.
In fact, there are great hidden dangers in the bright pigments of ceramic cups, especially when the inner walls are glazed. When the cup is filled with boiled water or drinks with high pH, toxic heavy metal elements such as lead in these pigments are easily dissolved in the liquid, and people who drink the liquid containing chemicals will do harm to the human body.
Third, plastic cups are the easiest to shelter evil people and shelter evil people.
Plastic cups should also be a kind of unpopular. Because plasticizers are often added to plastics, plastics contain some toxic chemicals. When hot water or boiled water is filled in plastic cups, the toxic chemicals are easily diluted into water. There are many pores in the internal microstructure of plastics, which hide dirt. If it is not cleaned, bacteria can easily breed. Therefore, when purchasing plastic cups, you must choose food-grade plastic cups that meet the national standards.
Heating plastic cups will precipitate some chemicals and easily breed bacteria. Although the plastic surface looks smooth, in fact, there are many cracks, which are easy to hide evil and shelter evil. In the office, people only use clean water to wash cups, and cups cannot be thoroughly cleaned and disinfected. It is best to use stainless steel cups or glasses in the office and clean them every day. It is best to use detergent and wash with hot water.
Fourth, don't drink coffee in a metal cup.
Metal cups, such as stainless steel, are more expensive than ceramic cups.
Metal elements contained in enamel cups are usually stable, but they may be dissolved in acidic environment, so it is not safe to drink acidic drinks such as coffee and orange juice.
5. Use colored cups to guard against heavy metal poisoning.
Colorful cups are attractive, but you'd better not use them. Because those bright pigments have great hidden dangers, especially when the inner wall is glazed, when the cup is filled with boiled water or drinks with high acidity and alkalinity, toxic heavy metal elements such as lead in these pigments are easily dissolved in the liquid, and people will do harm to the human body if they drink the liquid containing chemicals.