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Heck, keep them around when they do expire. I'm sure effectiveness starts to drop off at some age, but it's probably longer than 10 years. And I would sure rath
by jjeaff 6y ago
Heck, keep them around when they do expire. I'm sure effectiveness starts to drop off at some age, but it's probably longer than 10 years. And I would sure rather have an expired mask than no mask at all.
- mensetmanusman 6y agoSome brands of filter membrane has been shown effective after 20 years. It is stockpileable. To prepare for this pandemic, we needed 5-10 years of 24/6 production.