It is best to use thermos simply for drinking water, and avoid making tea and filling drinks, dairy products or traditional Chinese medicine. The structure of the thermos cup is relatively complex, which is more likely to become a health hazard on people's lips than an open cup without a cover, but the health problem is often ignored by people. Some people like to make tea in thermos cups, while others are used to holding milk or drinks.

However, using a thermos cup to make tea without paying attention to cleaning will cause odor and tea dirt in the cup; High-protein beverages such as milk and soybean milk are easy to deteriorate and stick to the inner wall under heat preservation conditions, making it difficult to clean; Acidic substances such as carbonated drinks and fruit juice will dissolve the nickel-chromium metal on the inner wall for a long time. ?

Extended data

Food that can't be put in a thermos:

1, acidic beverage:

If the inner container of the thermos cup is high manganese and low nickel steel, it cannot be used to hold acidic drinks such as fruit juice or carbonated drinks. This material has poor corrosion resistance and is easy to precipitate heavy metals when it meets acid. Long-term release of acidic beverages may harm human health. In addition, fruit juice is not suitable for high temperature storage, so as not to destroy its nutrients; Moreover, drinks with high sweetness are easy to cause a large number of microorganisms to breed and deteriorate.

2. Milk:

Some people put hot milk in a thermos and carry it with them. However, the acidic substances contained in dairy products will react chemically with stainless steel, which is not conducive to human health. Microbes in milk will also accelerate reproduction at higher temperature, which will make milk rot and deteriorate, causing discomfort such as abdominal pain and diarrhea.

People's network-thermos cup, a health hazard on the lips

People's network-four in the thermos cup