How to keep a thermos for many years?the Thermos are almost in each family, and all know rules of the treatment of him. However, not superfluous will be to remind of features of operation of modern thermoses with various systems of covers most long to keep them in a condition of high-quality heatsaving. Because some recommendations though are simple, but quite often neglect them.
Before each use I recommend to rinse an internal flask of a thermos with warm water for removal of residual smells. It is one of actual problems today which, however, is simple for eliminating, having taken the following simple recipe as a basis. For elimination of a persistent unpleasant smell fill up 2 - 3 tablespoons of soda in a flask, add up to the top boiled water and let`s be defended 20 - 30 minutes, after that merge contents of a thermos and again rinse it.
you Store a thermos open. This council only seems simple. Cases are frequent, densely closed the thermos which when is washed out, but not dried a cover; then it is very difficult to open it. And when opened - it was necessary to eliminate unpleasant began to smell.
After long operation some hostesses notice on a flask (in a thermos) a white raid or white spots. It occurs by means of effect of the mineral substances which are contained in water. In this case 5% solution of a sting or lemon juice will help. If spots did not manage to be “washed“ an easy way, fill a product with hot water with the temperature of 70 - 80 degrees Celsius with addition 1 of a teaspoon of baking soda, and, having densely closed a cover, leave for the night. After that merge contents, carefully rinse and wash up a thermos. It is easy to remove an ugly raid from tea and coffee which appears on an internal surface of a cover of the thermoses which are long in operation by means of any modern liquid detergent with insignificant addition of soda. Also do not forget that the thermos can be spoiled if to apply the abrasive washing substances to its cleaning. For the same reason I recommend to apply wooden wooden or plastic (from solid, qualitative plastic, not disposable) a spoon to hashing in a flask of tea, coffee, herb infusions, and other drinks. Metal spoons can scratch a surface of the heatpreserving vessel from within. Filling of a flask ice (including an artificial ice), a brine, sour and carbonated drinks, and also the heated oil it is necessary to exclude if you want to keep the thermos serviceable a long time.
Many use a thermos for preservation of heat, hot drinks within several hours or food - when the thermos is specially intended for food, has a wide throat. But on functional features of the thermopreserving device, it can also be applied also to preservation of cold. Before application to destination fill in in a thermos hot or cold water (depending on temperature of liquid / food with which you will fill a thermos), close a cover, and leave for 3 - 5 minutes. It is necessary in order that temperatures of walls of a flask became approximately equal temperature of contents of a thermos, otherwise the flask “will take away“ on itself“ part of heat of contents of a thermos. The usual thermos for household and tourist purpose having one flask, average - regarding cost - the price, at observance of recommendations of the producer keeps temperature to 60 degrees Celsius during 8 - mi hours. That is if boiled water is filled in, then it is obvious that after 8 - mi hours of storage its temperature should not in a good thermos fall lower than 60 degrees. These are not the maximum, namely average requirements to household unspecialized products of broad consumption. That drinks or food most long kept heat by long-term experience I recommend to fill with them all volume of a thermos. Fill a thermos so that air remained as little as possible inside, but at the same time there was a place for installation of an internal cover, and contents at the same time did not spill too much. Then it will longer keep heat.
Always screw up against the stop an internal cover of a thermos. All thermoses with different systems have such internal cover: and where only the screw cover is provided, and those that have both a screw cover, and additional push-button system. There is almost no thermos left with a stopper, but their consideration does not make sense as there everything is extremely clear - for the best preservation of heat in a flask it is necessary to establish most densely a cap - a stopper in a thermos mouth. To exclude course in thermoses with push-button system track that the button was installed in situation “is closed“ (closed). That to check it enough for several seconds to turn a thermos a mouth down. Also for achievement of the minimum losses of heat put on a thermos an external cover and a cover - where it is provided. All details of a thermos, including a stopper of an internal cover of push-button type wash
only manually, having provided situation “is opened“ in push-button system. For the period of drying do not close a cover of a thermos. Also you store a thermos in the same “open“ situation. That thermoses from stainless steel seem strong, I do not recommend to check specially in practice this circumstance. Cases when after blows of the case of a thermos against external obstacles (generally when transporting), owing to even insignificant dents on the case of thermoses from stainless steel, they lost thermoinsulating properties are in practice known.