Since giving birth to a baby, mother Bugu has consciously put health care on the agenda, and every time she goes out, she must order "soaking wolfberry in a thermos". Not only that, in order to make the rabbit drink less cold water outside, I will fill her thermos with hot water.

In fact, when it is cold, the thermos cup can be said to be "necessary". As long as you want to drink some hot water when you go out, a thermos cup is essential.

However, Ma Bugu has seen the topic that "the thermos cup becomes a life-threatening cup". What's going on here?

CCTV once exposed a report about the thermos cup, which surprised many mothers: If the thermos cup is unqualified, be careful that the hot water your child drinks will become "poisonous water"!

The "health cup" became the "death cup". What happened?

Beijing Consumers Association purchased 50 kinds of thermos cups from different channels. After testing, it was found that 19 kinds of heavy metals exceeded the standard. This probability is more than one third!

Heavy metals such as chromium, nickel and manganese in the thermos cup seriously exceeded the standard. What impact will it have on children?

According to the explanation of the encyclopedia:

If the chromium in human body exceeds the standard, skin allergy, nasal infection, eye and ear tingling or abdominal pain may occur. This will directly affect the child's respiratory system and digestive system, causing trouble to normal life.

If nickel exceeds the standard, it may cause functional degradation of various organs in the body, such as heart muscle, brain, lung, liver and kidney.

If manganese exceeds the standard, it will cause dizziness, fatigue, sweating and even a series of mental problems.

If children use this thermos for a long time, the heavy metals in their bodies will exceed the standard, which will not only cause physical discomfort, but also affect their minds.

If you have a thermos at home, you will find that the structure of the thermos is actually very simple. It's just a plastic shell and an inner container.

There will be a distance between the plastic shell and the inner container to form a closed compartment. And this compartment is used for heat preservation.

The thermos cup also adopts such a shell and inner container structure, and there will be a vacuum distance between them to prevent air from flowing inside and outside the cup. In this way, the heat in the cup cannot be transferred out, thus achieving the effect of heat preservation.

This is why touching an ordinary cup filled with hot water will feel hot, but touching a thermos cup will not feel this way.

In addition to the cup body, the sealing performance of the cup cover is also very important. The better the sealing, the better the effect of blocking air flow and the better the effect of heat preservation.

Therefore, when we choose a thermos cup, in order to see the insulation effect, in addition to the insulation function of the cup body, the sealing performance of the cup cover is also very important.

We have finished talking about the insulation principle of unqualified thermos cups and thermos cups. Let's take a look at how to choose the right thermos for your child.

① Try to choose the brand.

Buniu's grandfather always asks Buniu, "Which brand is it?" ? Which is better? "

Old people are reluctant to spend money themselves, but the things they buy for their children must be good.

Although this kind of "which is better to buy" behavior is a bit embarrassing, it is a relatively simple and good method for the elderly who can't choose quality.

However, when we choose a thermos cup, we don't mean that we must buy something more expensive, but try to buy a brand. After all, the products produced by large companies will be supervised and have better quality assurance.

The "three noes" products produced by small workshops are likely to use cheaper materials in order to save costs. In terms of quality, it is difficult to pass.

Therefore, whether you buy online or in a physical store, try to choose brand thermos cups.

Of course, let everyone choose the brand. What they buy is definitely not more expensive, but they need to pay attention to several places.

We continue to look down.

② marked with "304" or "3 16"

At present, 304 and 3 16 are commonly used and recommended in the market.

304 stainless steel

304 stainless steel is food grade stainless steel, which is also very common. The bottom of the inner container of the thermos cup I used is marked with "SUS304". If you just drink boiled water at ordinary times, it will be enough. Children are very suitable for this kind of thermos.

3 16 stainless steel

3 16 has good corrosion resistance and stability, and is not easy to react with other substances. If we like making tea and soaking Lycium barbarum in a thermos cup, this is more suitable.

If we choose a thermos for our children, try to choose "304" or "306" (usually marked on the bottom of the cup), which is safer.

③ Look at the straw material.

Children's thermos cups are generally equipped with straws. When we look at the material description, we must look at the material composition of the straw and the sealing ring.

Tritan, PP and food-grade silicone materials are relatively recognized and can be selected with confidence.

④ Look at the insulation effect.

In order to drink hot water conveniently, we must buy a thermos cup. Therefore, insulation is very important.

Above we talked about the principle of heat preservation, which is to isolate air and heat source, so as to achieve the effect of heat preservation. If the outer wall of the thermos cup feels very hot within a few minutes after hot water is poured into the thermos cup, its thermal insulation performance is definitely poor.

Generally speaking, the insulation effect of qualified thermos cups is about 6-8 hours. This time is enough for our daily use, so we can choose this one.

⑤ See the sealing effect.

The sealing effect of the thermos cup not only affects the heat preservation, but also concerns the safety. If the sealing effect is not good, the child will shake the cup casually, and the water will overflow, and he will be easily burned.

Before giving it to children, we can shake the cup upside down to see how tight it is.

Cold weather is more suitable for thermos cups, but when we choose thermos cups for our children, we should look carefully to avoid the "hot water" in the cups becoming "poisonous water".

What details do you usually pay attention to when choosing a thermos cup?

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