How to clean vacuum flask inside?

As the weather is getting colder, many people have begun to use vacuum flasks frequently. There will be some dirt inside the vacuum flask after a long time. The inside of the vacuum flask is deep and the bottom is difficult to clean. How to clean the inside of the vacuum flask? Here are some practical methods that can help you.

The mouth of the vacuum flask is narrow, and human hands cannot reach inside for cleaning. At this time, we can pour some edible alkali into the vacuum flask. Edible alkali has a strong decontamination ability and can help you clean the dirt inside the vacuum flask.

Then prepare an egg shell, crush it and throw it into a vacuum flask. Because the film inside the egg shell has the effect of cleaning stains. Secondly, the main component of eggshell is calcium carbonate, which can dissolve the dirt inside the vacuum flask.

Then pour some warm water into the vacuum flask, cover the lid and shake it. After shaking for a while, pour out the dirty water washed out. The cleaning effect of edible alkali will be enhanced in warm water environment. Secondly, when shaking the vacuum flask, the egg shell will rub against the inner wall of the vacuum flask to achieve the effect of removing the stains in the vacuum flask.

Finally, pour some hot water into the vacuum flask and rinse it again to remove the residual foam inside. The vacuum flask that has been cleaned in this way is as clean as the new one.

This is the little trick to clean the inside of the thermos. Have you learned it? Try it now!