Last Revised: January 06, 2022

Issued 4/15/2020

Revised 4/24/2020 with surgical-style mask information

​Revised 5/4/2020 with one-way exhalation valve information

Revised 5/19/2020 with Non-NIOSH Approved and Counterfeit Respirators

Revised 7/27/20 with Penn cloth face covering

Revised 9/28/20 updated language

Revised 1/20/21 with general KN95 use information

Revised 3/19/2021 with 3M counterfeit respirators

Removed 1/5/22

Face Covering or respirators with one-way exhalation valve

 

 

Non-NIOSH Approved and Counterfeit Respirators