First, how to choose a thermos cup
1, and test the thermal insulation performance. After filling with boiling water, tighten the bottle stopper or thermos cup cover clockwise. After about 2-3 minutes, touch the outer surface and lower part of the cup with your hands. If the cup is obviously heated, especially the lower part of the cup, it means that the product has lost its vacuum degree and cannot achieve good heat preservation effect.
2. Look at the tightness of the thermos cup. After adding water to the thermos cup, tighten the cork or lid clockwise, and put the cup flat on the table without water seepage; The screw-in and screw-out of the cup cover and the cup mouth should be flexible and without gap; Throw it hard for a few times. If there is no leakage, it proves that its sealing performance is good.
3. Look at the internal and external surface quality of the thermos cup. A good thermos cup generally has a smooth inner container and outer disk surface, no scratches and bumps, a smooth and consistent bottle mouth, a tight internal seal and a matching plug with the cup body.
4. Identify whether the accessories are environmentally friendly. Can be identified by smell, food-grade new plastic features: small smell, bright surface, no burr, long service life, not easy to age. If it is ordinary plastic, it will be inferior to food-grade plastic in all aspects.
5. Check the label of the cup. See if the product name, capacity, caliber, manufacturer's name and address, adopted standard number, usage method and precautions are indicated.
Second, how to maintain the thermos cup
1. Before use, wash the cup (cover) with neutral detergent in warm water; When it is used for the first time, clean the plastic stopper of the thermos cup with hot water.
2. Avoid collision and collision during use, because collision and collision will lead to the deformation of the cup, affect the effectiveness of the product or cause insulation failure or water leakage.
3. It is best not to put other drinks in the thermos cup; Try to avoid adding dry ice, carbonated drinks and other liquids that are prone to high pressure, and try to avoid adding salty liquids such as soy sauce and soup to avoid corrosion of the cup.
4. When it is not used for a long time, the inner container should be fully dry, and the cup cover should be covered, otherwise there will be peculiar smell or even water marks when it is applied next time.
After reading the above introduction, will you still be confused when buying and maintaining thermos cups? I believe you must have learned how to choose and maintain thermos cups!