Electric kettle can kill bacteria in water by boiling water at one time. Because water is boiled once, it will be cleaned after boiling, so there is less residue. It will not be boiled repeatedly like a water dispenser, which will greatly reduce the oxygen content in the water.
Precautions for boiling water:
Don't boil the water for too long. Boiling water for too long will cause water to age and form harmful substances. In order to kill germs and viruses in water to the greatest extent, reduce the hardness of drinking water and reduce the nitrite content in drinking water, it is best to control the boiling time of boiling water within 5- 10 minutes. If the boiling time exceeds 15 minutes, or the water heater in public places boils repeatedly.
The water of the day must be drunk the same day. If it is left for too long, it will form aged water and there will be many harmful substances. The longer the time, the more harmful substances, which is not good for your health.
Boil thoroughly. When boiling water, you can't think that the water is boiling just because it is about to boil. At this time, the water is quite toxic and has not been completely boiled. You should cook for a while before drinking.
Keep the tap water for a while before boiling. If tap water is used to boil water, it should be noted that tap water is chlorinated and disinfected, and the combination of chlorine and organic matter in water will produce carcinogens such as halogenated hydrocarbons and chloroform. When boiling water, take out the tap water and let it burn for a while, which can accelerate the volatilization of harmful substances.
Boiling time:
Wait for the water to boil for about 3 minutes before turning off the fire. This is because: after ordinary Jiang Hushui is sent to the waterworks, it must be chlorinated to remove microorganisms and other impurities. However, at the same time, chlorine interacts with the residual organic matter in water, which will form toxic carcinogenic compounds such as halogenated hydrocarbons and chloroform.