Double wall vacuum insulated water bottle is the most frequently used daily necessities in daily life. It can be bought everywhere in supermarkets and online. But in fact, it is not easy to buy a safe and practical double wall vacuum insulated water bottle. In addition to the sealing and heat preservation of the double wall vacuum insulated water bottle, the most important thing is to consider the safety of the material.
Some inferior thermos insulated water bottles on the market. Regular shopping partners should be able to find that there is a big difference in the price of double wall vacuum insulated water bottles on the market. Of course, thermos insulated water bottles, not the more expensive the better. But it is really not recommended that you buy too cheap thermos water bottles. This kind of thermos insulated water bottle may be made of 201 stainless steel. What are the potential safety risks?
1. Heavy metals exceed the standard. No matter what kind of stainless steel, there are three kinds of metals: nickel, chromium and manganese. Once they exceed the standard, they will cause harm to the body;
2. In addition to the stainless steel liner, we should also pay attention to the material of the accessories such as straw and sealing ring. If it is made of PC (polycarbonate), it will release bisphenol a when exposed to heat, which will induce precocious puberty and affect the development of nervous system. It is forbidden to use it on milk bottles.
Choose 316 stainless steel double wall vacuum insulated water bottle. The inner liner of qualified double wall vacuum insulated water bottle is made of food grade stainless steel 304 or 316. 316 material is lighter, more resistant to high temperature and corrosion, but the cost is also higher. If conditions permit, it is recommended to purchase the double wall vacuum insulated water bottle with 316 material identification. Pipette, seal ring these accessories are generally made of tritan, PP and food grade silica gel, which are safe and usable.