Is it harmful to drink water from a glass?
Ordinary glass is usually made of high borosilicate glass and fired at a high temperature of more than 600 degrees. It is a new type of environment-friendly teacup.
Because glass does not contain organic chemicals, when drinking water with glass, there is no need to worry about chemicals entering the human body with the drink. Moreover, the glass surface is smooth and easy to clean, and bacteria and dirt are not easy to breed on the cup wall, so it is more hygienic and safe to use.
At present, glass is the most recognized product by consumers. Not only will it not harm the health of consumers, but it is also the best and final choice for consumers! Therefore, when choosing glass, you must choose transparent and ordinary glass.
So all the cups are safe to drink?
Answer: No.
It is particularly important to note here that although crystal cups and various colored glasses appearing on the market now belong to the classification of glass, if colored glasses are painted with pigments, they may dissolve carcinogenic chemicals after being brewed with boiling water, and many crystal cups contain lead, which may lead to lead poisoning if used improperly.
Beware of lead poisoning in crystal glass.
Crystal glass is a kind of double-layer crystal glass, including crystal bottom, all-crystal, vacuum insulation, nano-molecular crystal glass, ordinary white glass and high white glass. At present, many crystal glasses bought for more than 20 yuan in the market mostly contain about 20% lead, and improper use of crystal glasses can easily lead to lead poisoning.
To this end, in order to ensure the health of drinking water, China Cup and Pot Network suggests that you try to choose transparent and ordinary glasses when drinking water, and try not to choose crystal cups that look very bright and noble. In addition to understanding this, you may wish to pay attention to the knowledge about how to distinguish glass materials on weekdays.
Glass is easy to clean without chemicals.
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.
It should be noted that the glass material has strong thermal conductivity, and it is easy for users to accidentally burn themselves. If the water temperature is too high, it may also cause the cup to burst, so try to avoid holding hot water.
Secondly, experts also advocate the use of enamel cups.
Because the enamel cup is glazed at a high temperature of thousands of degrees Celsius, it does not contain harmful substances such as lead, so it can be used with confidence.
Plastic cups are everywhere, which has the most hidden dangers.
Colorful cups are very pleasing, but in fact, those bright pigments have great hidden dangers. 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 drinking the liquid containing chemical substances will do harm to the human body.
Plasticizers are often added to plastics because they contain some toxic chemicals. When hot water or boiled water is filled in plastic cups, toxic chemicals are easily diluted into water, and there are many cracks in the internal microstructure of plastic, which hides dirt. Therefore, experts remind that when purchasing plastic cups, you must choose cups made of food-grade plastics that meet national standards.
Plastic cups are the easiest way to hide dirt and shelter dirt.
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.
In addition, there are many pores in the internal microstructure of plastics, which hide dirt. If it is not cleaned properly, bacteria can easily breed. Therefore, when purchasing plastic cups, you must choose food-grade plastic cups that meet the national standards.
The unglazed ceramic cup is safe for heat insulation.
The first choice for drinking water is a ceramic cup coated with colorless glaze, 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.
What about the magnetized cup and energy cup?
In addition, there is a relatively large team in the water cup family, which is the "magnetized cup" and "energy cup" promoted by merchants.
Medical reports at home and abroad do claim that magnetized water is beneficial to human health, but not all magnetized water is beneficial to human health. Only the magnetized water of the negative electrode can improve the physiological function of the human body and play a health care role, while the magnetized water of the positive electrode should not be drunk more.
Most of the magnetized cups we see in the market are made of ordinary magnets, regardless of positive and negative poles. Therefore, consumers should carefully identify when choosing a magnetized cup, and choose a magnetized cup made of unipolar magnetic sheet (negative electrode).
In principle, the "energy cup" can also improve human function and play a health care role. However, at present, many manufacturers of "energy cup" in the market have not verified the physical efficacy of this function, exaggerating the role of "energy cup", and some even claim that it can cure all diseases. Experts remind consumers that when buying an "energy cup" with health care function, they should recognize the legal certification given by the relevant departments and must not blindly follow.