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Thermos for tea. Choosing a quality
Modern tea thermoses for tea, which we meet everywhere, do not differ from the initial invention. And, as before, they are a glass or metal flask placed in the body. Despite the fact that this invention is very simple in its essence, it has been used in people's lives for quite a long time.
We choose a thermos
It is believed that the thermos for tea in the plastic case keeps the temperature better. This may be due to a lower thermal conductivity of the plastic than the metal. A good thermos for tea even in a day is able to keep the temperature at 50 degrees.
Check for leaks
The choice of thermos should be approached very carefully and responsibly. After all, this item is purchased for prolonged use, and not for one day. First of all, it is worth checking how well and tightly the cap is screwed. This is the main criterion that affects the storage of the temperature of the liquid.
Volume of the flask
Also, the duration of the preservation of temperature depends on the volume of the flask. The larger the bulb, the longer the temperature lasts.
Foreign odors
When choosing a thermos, it must be opened. It should not give off any unpleasant odors. If the fragrance is present, this indicates a low quality of materials used for production. The operation of a thermos of low-quality components can cause harm to health.
When choosing a glass thermos, it should be shaken. The bulb must be tightly fixed, otherwise sooner or later it will break. In this regard, the metal bulb is much stronger, but with deformation, microcracks can form in it, which will adversely affect the thermal insulation abilities due to leakage failure.
Gourmets and connoisseurs recommend for using infusion and infusion to use thermoses with a glass bulb. They know exactly how to make tea in a thermos bottle. This allows you to maintain the delicate taste of the drink, which is particularly valued by amateurs and regulars of tea ceremonies.
Practical testing
The quality of the thermos can also be checked practically. If there is such an opportunity at the place of purchase, then this will be the best way to evaluate this product. To do this, fill it with boiled water and leave for 15 minutes. If during this time the case will heat up, then the thermos for tea is of poor quality. The liquid in it will cool down very quickly, and there is no sense in such an acquisition.
In the modern market there is a huge selection of thermoses that can meet the needs of any person as a design and practicality.
Thermoses for food were also widely used. They look like a saucepan and keep the temperature on the same principle.
So, the best thermos for tea should meet the following requirements:
1. Must not exude sharp, unpleasant odors.
2. The cover must seal the flask tightly.
3. The larger the volume of the bulb, the better the temperature is preserved.
4. The metal flask is more practical and durable in use, while the glass flask is more hygienic.
5. When filling with boiling water, the thermos body must not be heated.
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