Still can’t buy fresh date BYD DE2322 and worried? Do expired masks work? The answer is no. The production date and expiration date of each mask will be marked clear on the package. Once expired, they should not be used because expired masks do not protect you or your family.
BYD recently upgraded its DE2322 N95 mask. The shelf life extends to five years. Not every mask has a five-year expiration date. It was produced in March 2022 and expire in March 2027. The long expiration date prevents you from worrying that it won’t work the next time you wear it.
How to store masks?
The ambient temperature for storing masks should range from minus 20 to 38 degrees Celsius. Special care should be taken to prevent direct sunlight if the weather is too hot.
Be sure to check the expiration date on the box every time you use a new mask. Make sure the mask is still past its expiration date. Before wearing a mask, check that it is in good condition. If the mask is damaged, it should be destroyed and discarded.
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Thank you for this Info.