The US government sent out a shipment of expired face masks to health workers. Here's how face masks can expire, and when they're still usable. Gabby Landsverk Mar 18, 2020, 12:56 PM
The U.S. government recently sent emergency face masks to several states and cities to help first responders combat the spread of the novel coronavirus. However, all the masks were expired, the New York Times reported. The specialized masks, called filtering facepiece respirators, can be less effective if the materials degrade over time, damaging the seal that protects wearers from airborne particles. However, the CDC has advised that even expired respirators may offer more protection that standard surgical masks, improvised materials, or nothing at all.
估计过期没用了
是啊，当时为了做点油漆活买的，买的时候10块钱
对呀，这个口罩没有呼吸阀，估计还是可以用一下。
美国政府也发过期的，https://www.businessinsider.com/how-do-n95-face-masks-expire-still-work-2020-3
The US government sent out a shipment of expired face masks to health workers. Here's how face masks can expire, and when they're still usable. Gabby Landsverk
Mar 18, 2020, 12:56 PM
The U.S. government recently sent emergency face masks to several states and cities to help first responders combat the spread of the novel coronavirus. However, all the masks were expired, the New York Times reported.
The specialized masks, called filtering facepiece respirators, can be less effective if the materials degrade over time, damaging the seal that protects wearers from airborne particles.
However, the CDC has advised that even expired respirators may offer more protection that standard surgical masks, improvised materials, or nothing at all.
哪里哪里？我有几包过期的，可以把没过期的捐出去，过期的自己用。
我打算送我朋友了，我倒是用不着
这东西应该有效期很长吧，可以用的。
厉害
你发达了！ 哈哈哈
哈哈哈，我拿给老婆看得时候她也这么说。
我查过了，加拿大没有给SUM进行处理的企业。安省政府当时说留着当备用，估计还在仓库放着。
加拿大政府已经在官网上请全球能够提供的企业进行注册了。
但是我找出了一些湿纸巾，因为自己花钱买的所以没扔。:)