Stainless steel cups are quite familiar items and used a lot in the family. Stainless steel cups have advantages thanks to their durability and good heat retention. However, many families have a habit of using them for a long time until they are damaged before replacing them. But stainless steel materials also have a certain lifespan, in which under the impact of temperature and acidic drinks, stainless steel surfaces can change their structure.
Accordingly, housewives should pay attention to observing the following signs to consider replacing stainless steel cups to ensure health safety for the family.
Signs of mold on the mouth of the cup
The stainless steel cup mouth and lid are the most easily overlooked positions when cleaning after use. Due to the structure often having spiral grooves or rubber gaskets, this is where food easily sticks and moisture accumulates. After a long time, if you do not clean the cup mouth, tiny black mold stains will appear.
Using moldy stainless steel cups daily will affect the body by bacteria, causing infections of respiratory and digestive diseases. Periodically clean the stainless steel cups and don't forget to remove the parts for inspection and wash thoroughly.
Risk of metal poisoning
High-quality stainless steel cups have good corrosion resistance, but if you regularly store strongly acidic fruit juice or thick tea, the surface protective film will be destroyed. When small rust marks appear in the stainless steel cup or the cup is rough and dull, it is a sign of the start of oxidation.
At this time, heavy metals such as chrome and nickel will be at risk of stopping contamination with drinking water and in the long term may cause damage to the liver and kidneys and adversely affect the nervous system.
Time to replace
If the stainless steel cup is deformed, the heat-retaining vacuum layer may crack, creating a microscopic gap for bacteria to multiply and it is difficult to clean as usual.
If you see that the heat retention efficiency of the stainless steel cup decreases or when the drink has a strange metal smell, replace the product immediately to ensure the health of users.
