If the kettle has scale, put a few spoonfuls of white vinegar in the water and burn it for 1-2 hours to remove the scale.

If there is scale in the thermos, pour tens of milliliters of white vinegar into the bottle and shake it a few times to remove the scale. White vinegar is a sour auxiliary material for cooking, but it has the characteristics of strong cleaning power, cleanliness and environmental protection.

The main raw materials of white vinegar are water, rice, rice husk, bran, edible alcohol, edible salt and so on. , bright color and mellow sour taste.

According to the test of American Institute of Good Housekeeping, 5% white vinegar has the functions of sterilization, mildew prevention and disinfection, which can kill 99% bacteria, 82% molds and 80% viruses.