Tea knowledge: 5 tips for cleaning tea scale!

By: HSEclub NewsJul 18, 2025
Tea scale refers to the scale on the inner wall of tea sets, which is formed by long-term storage of tea water. Tea sets that have not been cleaned of tea scale for a long time may breed mold in a humid environment.



Tea scale is formed by tannic acid in tea leaves, which is formed by the oxidation reaction between tannins in tea leaves and heavy metal elements exposed to air. The latter is the main reason why tea scale is harmful.

It should be emphasized that tea scale does contain compounds formed by tea polyphenols and metal elements, such as calcium and magnesium.

But whether it contains heavy metal compounds depends on the quality of tea leaves and the quality of water used for brewing tea.


If you drink tea frequently, tea cups are prone to thick tea scale, which is difficult to clean. Possible cleaning methods are as follows:


01. Use baking soda to clean tea scale

Many people only know that baking soda is used to make pasta, but in fact it also has a certain cleaning function. If the items in the kitchen are greasy, baking soda can be used to clean them. If there is tea scale in the tea cup, we can also use baking soda to clean it.

The operation method is very simple: find a pot of suitable size, put the tea set to be cleaned in it, sprinkle a handful of baking soda in it, and then add an appropriate amount of clean water. After boiling the water, let it stand for 20 minutes to let the water cool down, and the tea scale on the tea set will automatically fall off, and finally rinse it with clean water.


02. Use white vinegar to clean tea scale

White vinegar is acidic and has a softening effect on alkaline dirt, so it can be used to clean tea scale.

The specific operation is very simple: put all the tea sets in a suitable basin, pour some white vinegar into it, soak the tea cup with white vinegar, and the tea scale on it will automatically fall off, and finally clean it.

In addition, we need to boil water when making tea, and we need to use an electric kettle to boil water. After using the kettle for a long time, there will be a thick layer of scale in it, which will affect the taste of the water, and the brewed tea will not taste good.

In addition to cleaning tea scale, white vinegar can also be used to clean scale. When there is scale in the kettle, you can add some white vinegar to it, fill it with water and boil it, the scale inside will be dissolved by the white vinegar, and it will be very clean.


04. Use toothpaste to clean tea scale

Many people only know that toothpaste is used for brushing teeth, but in fact it can also be used to clean other items. Toothpaste contains detergent and fine abrasive particles, and we can use it to clean the tea scale in the tea set.

The specific operation is very simple: find an unused toothbrush, squeeze a little toothpaste on it, and use it directly to brush the tea set. The tea scale in the tea set will fall off quickly. After brushing, rinse it with clean water, and the tea set will be as clean as new.


05. Use lemon water to clean tea scale

Tea scale can be dissolved by acidic substances. In addition to using white vinegar to clean it, we can also use lemon water to clean it. Tea sets washed with lemon water are not only clean and hygienic, but also emit a lemon fragrance.

The specific operation is very simple. First cut the lemon into slices, mash the lemon slices, and squeeze out the juice inside. Then use a scouring pad dipped in lemon water to wipe the teacups one by one, dissolve the tea scale with lemon water, and finally rinse with clean water.

In fact, there are many common things in life that have a cleaning effect. Baking soda can be used to clean grease. If the items in the kitchen are stained with grease, they can be cleaned with baking soda. White vinegar can soften alkaline dirt. If there is scale on the faucet, it can be cleaned with white vinegar.


Finally, I would like to emphasize that friends who often drink tea should put the cleaning work on a regular basis. Rinse the tea set with clean water every time after drinking tea. Do not leave the tea in it, otherwise the teacup will soon have a thick layer of tea scale.

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Related Tags
  • tea knowledge
  • cleaning tea scale
  • tea set
  • tannic acid
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