The weather is getting colder and colder day by day. Thermos bottles are selling well as seasonal commodities. A simple silver plated liner plus a cork is the standard equipment, which has been the love of thousands of families for many years. However, it is very easy to accumulate scale in the thermos. How can the scale in the thermos be removed quickly and effectively?
The steps are as follows:
1. First, empty the hot water in the thermos and add vinegar to the thermos. The amount of vinegar should ensure that it has just passed the bottom of the thermos.
2. Then cover the thermos stopper, place the thermos horizontally, and then rotate slowly to make the vinegar fully contact with the thermos wall. Rotate for about 40 seconds, then open the cork and pour the vinegar in the thermos.
3. Then fill the thermos with one-third of the water. Close the cork, hold the cork with your hand to make the mouth of the bottle a little gap, and then shake the thermos. Shake the thermos for about 15 seconds and then pour out the water.
4. Observe if there is no scale in the thermos. Then repeat the previous step with clean water and wash it twice. If there is still a small amount of scale, dissolve the scale by repeating the second step with a small amount of vinegar. Then wash it with clean water for three times.