Derusting method of stainless steel thermos

Derusting method of stainless steel thermos.

In life, people often use stainless steel thermos to hold drinking water, and some people use it to make tea to enhance the taste of tea. But if the stainless steel thermos is used to hold water or make tea for a long time, it will also produce scale or rust like glasses and plastic cups. Today, I'll give you some advice on how to remove the rust in the stainless steel thermos.

1. Baking soda derusting method: baking soda is an industrial product that can decompose rust. Put 1 teaspoon baking soda in the rusty stainless steel thermos, wait for a few minutes, then pour out the water, and the rust in the stainless steel thermos can be removed.

2. Potato skin rust removal method: after using the stainless steel thermos for a period of time, there will be a thin layer of rust stains. At this time, you can put the potato skin in it, add some boiling water, and wait about 10 minutes for the rust stains to be removed.

3. Hot expansion and cold shrinkage rust removal method: pour the newly boiled water into the empty stainless steel thermos, wait for about 30 seconds, immediately pour out the hot water, and then quickly pour in the cold water, repeat for 2 to 3 times, the rust stains in the stainless steel thermos will fall off due to hot expansion and cold shrinkage.

4. Use vinegar to remove rust: if the stainless steel thermos has rust stains, put several spoons of vinegar into the stainless steel thermos with water, wait for half an hour, and the rust stains can be removed.

Stainless steel thermos does not mean that it will not rust, but has a thin passivation film to prevent further oxidation and corrosion. It is relatively not easy to rust. Therefore, stainless steel thermos is not suitable for long-term storage of food containers, especially for vinegar and other irritant liquids.