How Long Can You Use A KN95 Mask?

Both the US N95 and Chinese KN95 masks are manufactured and designed for one-time use (disposable design).

This means that each new use would require a new mask. However, because of the shortage of the N95 and KN95 masks, the CDC has recommended reusing of the disposable filtering facepiece respirators as a crisis capacity strategy.

The strategies for the extended use of masks like N95 or KN95 are available at The National Institute for Occupational Safety and Health (NIOSH).