We know that there are still many things to use in life, but we should pay special attention to their safety in the process of selection, so that the selected things will be more comfortable to use. The following small series will introduce you to the safety of ceramic-coated thermos cups.

Is the ceramic coated thermos cup safe?

Not safe. A thermos cup with a glass liner is the safest. Glass is a very stable substance, which is sintered from inorganic silicate.

1, stainless steel should have been food-grade 304 stainless steel, but you should know that the relevant national standards also clearly point out this. Iron contained in stainless steel is also a trace element that people need to take in every day, which can not only keep warm, but also keep out the cold.

2. But stainless steel thermos cups are not suitable for making tea and coffee. You know, tea leaves are soaked in warm water in a thermos for a long time, which can be said to be like mild fried eggs. At the same time, we know that tea polyphenols, tannins and other substances contained in tea will be leached in large quantities, which means that tea leaves are thick in color and have a certain bitterness. Because the water in the thermos keeps a high temperature, the aromatic oil in tea will evaporate faster, which also reduces the fragrance of tea.

How to choose a good thermos cup

1, choose brand products: We know that each brand of thermos cup has instructions, which will indicate various materials and parameters, and we can also choose thermos cups according to these data.

2. Observe the quality of the inner and outer surfaces of the thermos cup: Generally speaking, the surfaces of the inner container and outer plate of a good thermos cup are smooth without scratches and bumps. At the same time, pay attention to whether the cup mouth is smooth and whether there is a weld.

3. Test the thermal insulation performance of the thermos cup: after filling with boiling water, tighten the bottle stopper or cup cover clockwise, and touch the outer surface of the cup and the lower part of the cup body with your hands after 2 to 3 minutes.

4. If it is found that the cup body and the upper part of the cup body are obviously warm, it can be explained that the inner container of the thermos cup has lost its vacuum degree, thus achieving a good heat preservation effect.

Summary: So much for the safety of ceramic-coated thermos cups. Generally speaking, this kind of coated thermos cup is unsafe to use, so you must know clearly in advance when choosing it. If you want to know more about it, you can pay attention to our Qijia. Com for consultation.

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