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How to choose a qualified vacuum flask?

Views: 56     Author: Site Editor     Publish Time: 2023-05-05      Origin: Site

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Winter is coming, and it's the season to buy vacuum flasks. In the twelfth lunar month of winter, drinking the steaming warm water makes people very warm and happy! There are various types of thermos on the market, some are expensive and cheap, ranging from dozens of yuan to hundreds of yuan. Which one is better?


Substandard vacuum flask can cause cancer!


Last year, CCTV exposed the inside story of the vacuum flask. Many unscrupulous manufacturers used materials that did not meet the food standards to make "death cups" in pursuit of low cost and high profits.


The heavy metal content of the inner tank of these "death cups" seriously exceeds the standard, and the corrosion resistance does not meet the standard. CCTV test data shows that if hot water is poured into a vacuum flask, it will chemically react with these heavy metals. It can become poisonous water in a few seconds, seriously damaging the liver, kidneys and other organs.

vacuum flask

How to choose a high-quality vacuum flask


1.304 stainless steel vacuum flask

According to national regulations, all food-grade stainless steel grades are at least 304 stainless steel, which is our common 18/8 stainless steel. Among them, 18/8 means that the composition of this stainless steel material contains 18% chromium and 8% nickel. The material that meets this standard is a green product that meets the national food-grade standard, and the product is rust-resistant and corrosion-resistant.


The color of the ordinary stainless steel cup is whitish and dark. If it is immersed in 1% salt water for 24 hours, it will produce rust spots. Some of the elements contained in it exceed the standard and directly endanger human health.


2. Insulation performance selection

The insulation performance of the hot vacuum flask is currently due to the more proficient technology, and the results achieved by major manufacturers have been very close, and most of them can guarantee a minimum of 6 hours of insulation.


Pour hot water into the thermos cup, let it stand for a while, touch the back and bottom, if there is no temperature change, it is qualified; if the change is obvious, it means that the heat preservation is not good.


3. Plastic parts identification method

The characteristics of new food-grade plastics are small smell, bright surface, no burrs, long service life and not easy to age. Ordinary plastics or recycled plastics are characterized by big smell, dark color, many burrs, and plastics are easy to age and break.


4. Buy regular products

Although everyone loves "good quality and low price", products purchased from formal channels have more security guarantees. From this perspective, buying big brands is the first choice. Especially when buying thermos cup products specifically for children, you must look for big brands and ensure the quality.


Welcome to visit our official website to buy high-quality stainless steel drinking cups, best water bottles, custom water bottles and other water bottles.

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