Thermoses-jugs: characteristics, overview of models and selection rules

It is well known that a thermos is called a special heat-insulating dish. It is able to maintain a higher or lower temperature of food products compared to the ambient temperature indicator for a long time. Nowadays, modern manufacturers produce many options for thermal dishes, one of them is a thermos jug. It is used for storage and transportation of tea, coffee, cocoa, milk, juices, fruit drinks, lemonade, kvass, herbal infusions; in thermoses-coffee pots you can brew coffee.

Outwardly, thermal jugs are similar to jugs or coffee pots, tapering upwards and having a wide bottom. They are divided into thermoses that keep the temperature of the drink, and thermal dishes in which you can brew coffee. The thermos jug consists of an external case and an internal flask; between the body and the flask there is a space that helps to maintain the temperature regime.

In vacuum thermoses, the air from the free space is pumped out.The cover attached to the body can be hinged or unscrewed; The handle of the thermo jug is made of a special insulating material, it does not heat up.

Both the outer body and the inner flask of thermoses-jugs can be made from various bases, which have their own characteristics, advantages and disadvantages.

For the outer case, two types of materials are most often used.

• Metals. Such a body is characterized by high strength. Some thermal jugs are made with a double layer of metal and an additional air gap, which improves their thermal insulation properties.
• Plastic. For the manufacture of thermoses, durable plastic is used, which is resistant to high temperatures. Handles of thermal jugs are also made from this material, often a special type of plastic is used for this - bakelite, which has insulating properties.

Internal flasks are also of several types.

• Glass. Previously, thermos flasks were made only from this material. Glass is characterized by low thermal conductivity, is not affected by food acids, and is easy to clean. But it is a very fragile, short-lived material.
• From stainless steel. Stainless steel is a stronger material than glass. However, the inner flask, made of poor quality stainless steel, oxidizes easily, making drinks taste of iron.
• Plastic. This material is used in inexpensive thermal jugs. Such thermoses are short-lived, because due to temperature changes, their coating is deformed, and cracks form on the flask. It should also be taken into account that plastic, when heated, releases harmful substances that enter the liquid through cracks.

To date, thermoses-jugs are presented in a wide range. Based on specific requirements, it is easy to choose suitable high-quality models. The most popular brands and samples include several options.

• Thermos. Thermoses of this American manufacturer, made in China, are considered the most expensive and high quality. For example, a Brasilia TGS-600 C thermos jug with a volume of 0.6 liters. Its body is made of stainless steel and covered with a transparent varnish to protect it from scratches, the flask is also made of high quality steel. It has a convenient plastic lid with a latch and a silver/black design. This model can be washed in the dishwasher.
• emsa. The thermos-coffee pot of this German company Bell model with a glass flask has a volume of 1 liter and is made in brown metallic color. The body is made of high quality plastic, and the vacuum flask is made of durable glass. The thermo coffee pot has a comfortable handle with an anti-slip coating and a stopper that is easy to open even with one hand. The perfectly shaped spout protects the liquid from spilling. This model keeps the aroma and temperature of coffee for about 12 hours.
• Biostal. The NKP-1000 thermal jug of this Russian brand keeps the high temperature of the liquid up to 16 hours. It has a black and silver color scheme design, a stainless steel body and a double metal flask. The lid is opened by pressing a special button. This model has a small spout, a large plastic handle; thermos wide and deep, resistant to dirt. The volume of this thermal jug is 1 liter, there is also a version NKP-1500 with a volume of 1.5 liters.
• "Arctic". The thermos jug of this Russian manufacturer model 601-2000 of silver color can be used as a thermos and a teapot. It has a large volume - 2 liters (model 601-1500 - 1.5 liters). The flask and the case are made of stainless steel. The spout of this thermal jug has an ideal shape, and the handle is made of non-heating plastic. The liquid temperature of 60 degrees Celsius is kept in it for 6 hours.

To make the right choice of high-quality and safe thermal jugs, carefully read the advice of experts.

• The larger the volume of the thermos jug, the longer it retains heat.
• Typically, the thermos manufacturer will put icons on the case indicating the types of food that can be stored in it.
• Do not pour carbonated water into a thermos, as it contains carbon dioxide and acids that destroy the metal.
• When choosing a thermos jug, be sure to open the lid of the model you like. The container should not have a sharp unpleasant odor. This is an indicator that the product is made from low quality materials.
• Remember that a considerable price and a well-known brand are a guarantee of high quality and safety of the product.

In the next video you will find a review of the Biostal NKP-1500 1.5 liter thermos jug.