How To Choose A Vacuum Thermos
Inner tank material
The inner tank of the thermos flask is mostly made of stainless steel. Breaking it down, it can be divided into 304 and 316. The latter is better and more resistant to corrosion than the former.
Some people may have heard that thermos cups cannot be used to make tea, and think that tea immersed in stainless steel for a long time will precipitate heavy metal substances, in fact, do not worry, this statement is not supported by much actual data.
That is to say, brewing tea with a 304 or 316 thermos cup of qualified material will not precipitate heavy metals, and the tea will not corrode the inner tank!
Rest assured! Really rest assured, directly purchase a 316 material thermos flask to protect a higher level.
Open with
There are two main ways to open the thermos cup, one is to press to open the lid, the other is to rotate to open the lid, and the two ways have their own advantages!
Pressing to open the lid is easy to operate, just a gentle press, you can open the lid, easy to use. It is suitable for scenarios where hands are inconvenient and cannot unscrew the thermos cup.
However, if the press-type thermos cup is put into the bag, the switch may be accidentally touched, causing hot water to spill out, so it is best to choose a style with a safety lock.
If you are not looking for easy opening of the lid, then a rotary thermos flask is enough. Put it in the bag and carry it, as long as you screw the lid tightly, there will be no accidental water leakage.
Portability
Considering the situation of carrying it outside, the thermos cup is naturally the more convenient it is to carry, the better.
Therefore, when selecting, we should pay attention to two points, one is the weight, and choose a lighter thermos cup with the same capacity.
The second is a portable design, and you can choose a thermos cup with its own handle or strap.
More detailed, such as handles, whether the straps can be stored, whether the straps can be adjusted, etc., can be considered according to the individual, and some of these designs of thermos cups are naturally more convenient to use.
If it is only for office or home use, it can appropriately lower the requirements for portability, after all, the material bar and good thermal insulation effect are the first!
Thermal insulation effect
The insulation effect of the thermos cup is still quite important, after all, buying insulation is not long, that is, buying a lonely. Generally speaking, the thermos cup is kept warm at 100 °C, and the water temperature can be 60 °C or even higher after six hours of hot water, and the water temperature can be 10 °C or even lower after six hours of cold water.
Most of the qualified thermos cups on the market generally have this insulation performance, as long as they are not buying too inferior products, they generally do not need to worry.
Whether it is leak-proof
This mainly depends on the tightness of the thermos cup, no one wants to fill the water, put it in the bag, bump it will leak water, right, so when starting the thermos cup, it is recommended to fill the water and shake it upside down, if there is no water spilled, it is the sealing is qualified.
