masks are used almost every day. However, many people are prone to overlook a problem.
masks actually have a "shelf life"
Expired masks will be greatly reduced.
Not recommended to use them! ! !
It has been more than two years since the outbreak of the new crown epidemic in January 2020. Wearing masks has become normal in our lives. Many people buy hundreds of them at the same time. When faced with discounts and promotions, they will buy more. Some people say that the first batch of masks they stocked up have not been used up yet.
In fact, the shelf life of masks is generally two or three years. Experts say that expired masks generally do not produce toxic substances, but their protective effect will be greatly reduced.
Senior engineer of quality inspection of Guangjian Group Zhu Ruidian:
If the mask is kept for a long time
, among which meltblown cloth , its electret effect may decrease
, which will lead to a decrease in filtering performance
, so for our daily use
, the performance of masks will decrease, which means that the protective effect will become worse
, suggest that you do not stock up too many masks in daily life
, after all, mask products are still sufficient on the market
, What situations do you need to change your mask immediately?
is worn continuously in crowded places for more than 4 hours;
has been to high-risk places such as fever clinic or has been in contact with patients with fever;
When the mask is damp or damaged or contaminated;
When the mask cannot fit the face.
It is worth noting that
disposable masks will be greatly shortened after opening
After
After opening
After
, bacteria may grow in more than ten days
, so you should use the mask after disassembly as soon as possible
In addition, recently, online platforms have launched so-called "dumpling artifacts", such as "mask explosion beads", "cool stickers", or "mask fan", "mask stand", etc., claiming that consumers can be cooler and more comfortable when wearing masks, but professionals point out that masks are wet by "explosive beads" liquids, which will affect the filtering performance. Installing other objects on the masks will affect the fit between the masks and the face and affect the protective effect. Consumers should use them with caution.
Guangdong Radio and Television Station reporter Lan Fen
Source: Guangdong Radio and Television Station's most news today
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