In the 19th century in England, James Dewar invented the Dewar the storage capacity of the esoteric. After a while, his pupil Reinhold Burger found in the commercialization of his invention. Very quickly, his company became famous all over the world. The company began to produce anything other than a thermos bottle. and a modern thermos bottle is different from those of its invention. When the bottle is glass or metal frame.
If the thermos bottle you will need a suburban to travel, it is best to choose a metal bottle, because it is stronger. If designed for use in the city, choose your thermos glass bulb because it is hygienic. The temperature will remain the same.
Experts believe that the plastic thermos to keep the temperature of the metal. A good thermos bottle to keep the temperature around 50 degrees, even after 24 hours. These criteria are met the bottles, packages, Hangzhou EXCO companies Insulation Penguin, Mimi, “Mimi”, etc.
When you buy a thermos bottle that the plug is screwed in tightly. In essence, this depends on the desired retention through
Also save the temperature depends on the volume. The larger displacement, the better to keep the heat in.
When you buy a thermos bottle to open it. If you feel an unpleasant smell, so this bottle is made from inferior materials. If you decide to choose this because of the price or the quality of the thermos bottle design-do not do it, because it will be applied to the liquid noxious substances.
If you buy a glass bottle, shake its thermos flask. The light bulb should not hang out, otherwise it just comes sooner or later. Metal bottle, certainly stronger, but it is very much the metamorphosis of microcracks, which can get the vacuum disappears and will be lost for insulation and sealing.
According to experts, the different welding and tinctures should be prepared in the glass thermos bottle.
The quality of the thermos bottle can be checked. It is necessary to fill in the boiling water and leave for 10 minutes. If the body is hot, thermos bottle is defective.
Modern thermos bottle not only liquids, but also food and are available in the form of kastryulek.