On July 15, 2021, ALG Health issued a notification concerning PT-N95F-01S respirators, under NIOSH approval number TC-84A-9288.

Respirators produced within certain lots used materials and processes that do not conform to the NIOSH approval issued. More information can be found on the NIOSH Manufacturer Notice webpage: https://www.cdc.gov/niosh/npptl/usernotices/noticesmanufact.html under ALG Health.