Nowadays, people pay more and more attention to health preservation, and "soaking Lycium barbarum in a thermos cup" is no longer a "patent" for middle-aged people. People can often be seen drinking water in thermos cups on various occasions, regardless of gender and age. Do you also drink water in a thermos for health? Do you know how to choose the right thermos? At present, there are many kinds of thermos cups on the market, but the quality varies widely. Today, I will teach you some skills in using thermos cups and how to correctly choose thermos cups to help you use thermos cups healthily and scientifically.

First, remember that these four are not fake.

Not all drinks can be filled in thermos cups because of their material and sealing. Here are four common misconceptions about dress. See if you "step on thunder".

1. acidic beverage: stainless steel will not release undesirable substances due to its high melting point. However, stainless steel is most afraid of strong acids. If you leave a drink with strong acidity for a long time, it may damage the inner container of the thermos cup.

2. Milk: Some people will put hot milk in a thermos cup, but this practice will make the microorganisms in milk multiply rapidly in a proper environment, leading to milk corruption, diarrhea and abdominal pain. Because the acidic substances in milk at high temperature will cause chemical reaction on the inner wall of the thermos cup, which will affect human health.

3. Making tea: Tea contains a lot of tannic acid, theophylline and multivitamins, which is only suitable for brewing with water of about 80 degrees. The thermos will soak the tea leaves in high temperature and constant temperature water for a long time, just like boiling with warm fire. But in fact, tea is not suitable for long-term soaking, because heavy metals may be released and vitamins in tea will be destroyed.

4. Chinese medicine: Some people like to soak Chinese medicine in a thermos bottle, which is convenient to carry. However, a large number of acidic substances are dissolved in the boiled Chinese medicine, which is easy to react with the chemical substances contained in the inner wall of the thermos bottle, and it is harmful to human health when dissolved in soup.

Second, the selection skills of thermos cups

1. Measure the thermal insulation strength: fill it with hot water, cover it, and touch the appearance or bottom of the cup after five minutes. If it feels warm, it means that the heat preservation effect is not good enough.

2. Look at the tightness of the thermos cup: fill it with water, cover it tightly and back it for a few minutes or shake it hard. If there is water leaking, it means that the seal is not enough.

3. Is the material of the thermos cup safe? Even the thermos cup will use plastic material to a certain extent. Judging whether it is safe or not can be identified by "smelling". If the thermos cup is made of food-grade plastic, it has no taste, smooth surface and no burr, and its service life is longer.

4. Identification of stainless steel material: For stainless steel thermos cups, the quality of the material is very important. Stainless steel has many specifications. If it is 18/8, the stainless steel contains 18% chromium and 8% nickel. Only materials that meet this standard are green products.