Can the thermos cup only hold boiling water?

Hot water bottles can be used not only for boiling water, but also for non-acidic drinks such as soup and porridge.

The thermos cup is made of stainless steel. Although it has the advantages of high hardness and strong corrosion resistance, when the thermos cup is filled with acidic substances, the stainless steel liner will be corroded by acid-base reaction and will also produce heavy metal substances harmful to human body.

Although the thermos can't store acidic substances such as coffee and soda for a long time, it can be stored for 1-2 hours in a short time. However, long-term storage will lead to chemical reaction between coffee and electrolytic substances in the inner container of the thermos cup, which will lead to coffee deterioration;

However, soda water is easy to leak when it is stored in the thermos for a long time, and a large number of bubbles will be generated when the thermos is bumpy, which will cause the liquid in the thermos to overflow.

Precautions for using thermos cups:

1. Before the new thermos cup is used, it needs to be preheated with boiling water for 5 minutes for simple high-temperature disinfection.

2. When the inner container of the thermos cup produces red rust spots, you can pour warm water and diluted vinegar into the thermos cup, let it stand for half an hour, and then rinse it with clear water several times to clean it.

3. When filling the thermos with boiling water, don't fill it too full to avoid scalding when screwing the bottle cap.