How many liters of water can an ordinary household kettle hold?

There are two kinds of thermos bottles commonly used at home: the small one is 2000mL, and the large one can hold 3500mL. Thermos bottles are daily necessities, with bamboo sticks, iron sheets and plastic shells outside and bottles inside.

The bottle liner is made of double glass. Both sides of the interlayer are plated with silver, aluminum, copper and other metals, and the middle is vacuumized. The bottle mouth has a plug, which can keep the temperature in the bottle for a long time. Hot water containers are often called thermos bottles.

Extended data:

The ions and compounds of silver, the material of kettle gallbladder, are toxic to some bacteria, viruses, algae and fungi, but almost harmless to human body. At the beginning of the 20th century, people also put silver coins in milk to extend the shelf life of milk. The sterilization mechanism of silver has been debated for a long time, and there is no conclusion so far.

Although silver is almost harmless to the body, long-term exposure to silver metal and non-toxic silver compounds can also lead to silver deposition. Because the body pigment changes, the skin surface will appear gray-blue Although non-toxic, it will still affect the appearance.