The method of purchasing a vacuum flask is very simple, as long as it is judged from the four aspects of thermal insulation performance, sealing, plastic parts and materials. The following is a detailed judgment method. After the vacuum flask is purchased, will everyone use it? In fact, everyone will use vacuum flasks in life, but there are not many people who use stainless steel vacuum flasks healthily. Many people are used to using them as ordinary cups, which is wrong. How to use the thermos properly to help consumers' own health? Let's take a look together next!
When we buy vacuum flasks, we naturally pay attention to the insulation effect and materials, so how to choose? We can judge from the following four aspects:
1. Touch the bottom: see the thermal insulation performance
The thermal insulation performance of the stainless steel thermos mainly refers to the liner of the thermos. Tighten the vacuum air pot flask after filling it with boiling water. After about 2 to 3 minutes, touch the outer surface and lower part of the cup body with your hands. If you find a warm feeling, it means that the insulation performance is not good enough.
2. Shake it up: look at the tightness
Fill a glass of water, screw the lid tightly, invert it for a few minutes, or shake it a few times. If there is no leakage, it proves that the sealing performance is good.
3. Smell: see if the accessories are healthy
If the vacuum flask is made of 304 plastic, it will have less odor, bright surface, no burrs, long service life and not easy to age.
4. Look at the specifications: 18/8 (SUS304) is the "password" of the vacuum flask
There are many specifications of stainless steel materials, of which 18/8 (SUS304) means that the stainless steel material contains 18% chromium and 8% nickel. Only materials that meet this standard are green products.
Insulation cups are used under conditions that require insulation, such as keeping cold in hot summer and keeping warm in cold winter. However, many people are used to using it as an ordinary cup, which is wrong.
1. Do not store any drink for a long time
Whether it is water or beverages, they are fresh and healthy. It is okay for office workers to use the 304 stainless steel vacuum flask to pack milk, Chinese medicine, etc. to go out for emergencies, but they still need to pay attention to drinking them as soon as possible.
2. Always clean the sealing ring of the cup lid
Many people think that the vacuum flask has a good seal and is not easy to be polluted. However, they do not know that the sealing ring of the cup lid is a breeding ground for bacteria, which can easily contaminate the water in the cup, so it is better to clean it frequently. Usually do not use a steel ball to scrub the inner liner of the stainless steel vacuum flask. For difficult-to-remove stains, you can rinse it with a neutral detergent, or wash it with diluted vinegar. The washing time should not be too long, so as not to damage the passivation film.
3. Let the water cool down and put it in the thermos
No matter which vacuum flask is used, it is recommended that you do not pour the freshly boiled water directly into the vacuum flask. You can choose to drop the water temperature below 70°C before pouring it into the vacuum flask.
4. Have you really washed your vacuum flask?
How to clean the stainless steel vacuum flask cleanly, don't worry if there are odors and stains, baking soda, toothpaste and salt water are all cleaning tools!