Table 1.

Overview of methods for FFR-DR

Method	Benefits	Drawbacks
Moist heat 1. Conventional oven generated moist heat	○ Effective ○ Equipment readily on hand	○ Long sterilization cycles ○ Limited space
1. Microwave-generated moist heat	○ Effective ○ Fast cycle time	○ Requires specialized equipment ○ Labor intensive ○ Masks with metal can melt
Vaporous hydrogen peroxide	○ Effective ○ Gentle on mask materials	○ Difficult to scale ○ Requires specific equipment ○ Cycles can abort unexpectedly
Ultraviolet germicidal irradiation	Effective ○ Scalable ○ Equipment readily on hand ○ Fast cycle times ○ Less labor intensive	○ Requires exposure of all surfaces (shadowing) ○ Reduces strap integrity over time ○ Limited specific FFR types

FFR filtering facepiece respirator