You're not supposed to reuse the common N95 filtering facepiece respirator mask. But given that they're almost impossible to find or impossible to afford amid the coronavirus pandemic, here are some acceptable methods to decontaminate and reuse common N95 masks.

Method 2: Steaming or boiling

Dr. Tsai says submerging an N95 in 125C/260F degree steam or boiling water for 3 minutes will disinfect the mask without significantly reducing its filtration efficiency (FE). Don't excessively stir the mask if you boil it, use only enough manipulation to keep it submerged. If your mask has paper outer and inner layers, neither the steam or boiling methods are advisable as they will disintegrate those paper layers that hold the filter medium between them.

More at source: CNET

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