NIOSH Conformity Assessment Letter

to Manufacturers

NIOSH CA 2022-1045

June 2022

 

Subject: Updated Information for NIOSH-Approval Holders having Public 

Health Emergency (PHE) Approvals issued during the COVID-19 Response, 

and the NIOSH action to obsolete (phase out) these PHE approvals

Supersedes NIOSH CA 2021-1036
Document Number

NIOSH CA 2022-1045

Page 2 of 4

1) SUMMARY

Between May and November 2020, NIOSH issued limited, temporary Public Health Emergency (PHE) 

approvals for N95 filtering facepiece respirators (FFRs) and powered air-purifying respirators (PAPRs)

to address supply shortages during that time. 

In July 2021, NIOSH reminded PHE approval holders that these approvals are limited and temporary 

and will be revoked when the COVID-19 public health emergency declaration ends. 

Because there are adequate supplies of NIOSH-approved respirators in the United States, NIOSH is 

immediately obsoleting (phasing out) the remaining PHE approvals. Obsoleted respirators are no 

longer permitted to be manufactured by the approval holder but can continue to be sold, used, and 

recognized as NIOSH approved until the approval is revoked or rescinded. 

Approval holders may rescind a PHE approval by emailing the NIOSH Approval Program to identify the 

approval number to be rescinded. 

Approval holders may submit a new approval application to obtain a conventional NIOSH approval. An 

application for a new NIOSH approval must be submitted and approved by NIOSH through the 

respirator approval process described in 42 CFR Part 84, NIOSH Conformity Assessment Notice NIOSH 

CA 2021-1034R1, and the NIOSH Standard Application Procedures.

The table provided below clearly identifies the obsoleted PHE FFRs and PAPRs and the PHE approval 

holders. Respirator users should also reference the information provided in NIOSH CA 2022-1044

when making decisions about respirator selection and use. 

OBSOLETED PHE FFR APPROVALS and APPROVAL HOLDERS

TC-84A-PH01 General Motors Company

TC-84A-PH04 General Motors Company

Subject: Updated Information for NIOSH-Approval Holders having Public Health 

Emergency (PHE) Approvals issued during the COVID-19 Response, and the NIOSH 

action to obsolete (phase out) these PHE approvals 

Supersedes NIOSH CA 2021-1036
Document Number

NIOSH CA 2022-1045

Page 3 of 4

TC-84A-PH05 Ford Motor Company

TC-84A-PH06 ViruDefense Inc.

TC-84A-PH08 General Motors Company

TC-84A-PH10 ThermoPore Materials Corporation

TC-84A-PH11 ThermoPore Materials Corporation

TC-84A-PH12 ThermoPore Materials Corporation

TC-84A-PH13 ThermoPore Materials Corporation

TC-84A-PH14 ThermoPore Materials Corporation

TC-84A-PH15 Protective Health Gear, Inc.

TC-84A-PH16 Pandmedic, Inc. 

TC-84A-PH17 AmSafe Inc. 

TC-84A-PH18 Outdoor Research, LLC

OBSOLETED PHE PAPR APPROVALS and APPROVAL HOLDERS

TC-21C-PH02 Ford Motor Company

TC-21C-PH03 Allegro Industries

TC-21C-PH04 American PAPR, LLC

TC-21C-PH05 AirBoss Defense Group, LLC

TC-21C-PH06 Hunter Engineering Company

Seven other PHE approvals were previously rescinded by the approval holder or revoked by NIOSH. 

Revoked or rescinded respirators are not recognized as NIOSH-approved and cannot be used in 

workplace settings where the use of NIOSH-approved respirators is required. 

RESCINDED or REVOKED PHE APPROVALS and APPROVAL HOLDERS

TC-84A-PH02 Advoque Revoked 9/10/20

TC-84A-PH03 Well Span Health Rescinded 4/29/22 TC-84A-PH07

TC-84A-PH09 Outdoor Research, LLC Rescinded 9/29/20
Document Number

NIOSH CA 2022-1045

Page 4 of 4

TC-84A-PH19 Plasticon Industries, LLC Revoked 4/18/21

TC-84A-PH20 United States Mask, LLC Rescinded 6/22/22

TC-21C-PH01 Whirlpool Corporation Rescinded 5/25/21

2) AUTHORITY

42 C.F.R. Part 84, Approval of Respiratory Protective Devices

3) REFERENCES

Reference Public Health Emergency Declarations for the most current Renewal of the Determination 

that a Public Health Emergency Exists Nationwide as the Result of the Continued Consequences of 

Coronavirus Disease 2019 (COVID-19) Pandemic.

Letter from RADM Denise M. Hinton, FDA, to Dr. Robert Redfield, CDC, March 11, 2020, to clarify 

Emergency Use Authorization (“EUA”) issued by the Food and Drug Administration (“FDA”) on March 2, 

2020

Letter from RADM Denise M. Hinton, FDA, to Dr. Robert Redfield, CDC, March 28, 2020, authorizing 

emergency use of NIOSH-approved air-purifying respirators for use in healthcare settings by HCP to 

prevent wearer exposure to pathogenic biological airborne particulates during FFR shortages resulting 

from the Coronavirus Disease 2019 (COVID-19) outbreak, pursuant to Section 564 of the Federal Food, 

Drug, and Cosmetic Act (the Act) (21 U.S.C. § 360bbb-3) 

Authorization for Medical Products for Use in Emergencies, 21 U.S.C. § 360bbb-3

NIOSH Conformity Assessment Notice (CA 2021-1034R1), June 2021, Summarized information about 

NIOSH Respirator Approval Program (i) Basic Application Procedures (ii) Quality Assurance 

Requirements and (iii) Supplier or Subcontractor Agreements

Standard Application Procedure for the Approval of Air-Purifying Filtering Facepiece Respirators Under 

42 CFR Part 84, revised March 12, 2018, Section 3.1 and 3.2

Standard Application Procedure for the Approval of Powered Air-Purifying Respirators and Chemical, 

Biological, Radiological and Nuclear Powered Air-Purifying Respirators Under 42 CFR Part 84, revised 

March 12, 2018, Section 3.1 and 3.2