NIOSH Conformity Assessment Letter

 to Manufacturers

NIOSH CA 2020-1031 

 August 2020 

 

Subject: Effective Immediately - In response to COVID-19 – UPDATED NIOSH 

prioritization for accepting and examining particulate filtering respirator 

approval applications, including Surgical N95 respirators, submitted by 

existing approval holders, new domestic manufacturers/applicants, and new 

international manufacturers/applicants

Supersedes NIOSH CA 2020-1027
Document Number

NIOSH CA 2020-1031

Page 2 of 3

In response to the nation’s effort to control the spread of coronavirus disease 2019 (COVID-19), the 

National Institute for Occupational Safety and Health (NIOSH) Respirator Approval Program is 

accepting and prioritizing applications received for new approvals and extension of approvals

submitted by existing approval holders and new domestic respirator manufacturers/applicants. 

NIOSH is committed to protecting healthcare personnel and Americans preparing to return to work 

by accepting and expediting applications to increase the supply of NIOSH-approved particulate 

filtering (air-purifying) respirators and ensure quality products providing the intended protections are 

available. The applications accepted can include those seeking or modifying approval for filtering 

facepiece respirators (FFRs), including Surgical N95 FFRs described in NIOSH CA 2018-1010R1, half 

mask and full facepiece air-purifying respirators (APRs), and powered air-purifying respirators 

(PAPRs). During the COVID-19 response period, NIOSH is not accepting applications for approval of 

FFRs with novel head suspensions, e.g., ear loops. NIOSH is focusing its resources to approve designs 

with traditional two head-strap suspensions, commonly used in respirator designs demonstrating the

fit and protection required by OSHA.

NIOSH has posted updated guidance (“SN95 Guidance”, NIOSH CA 2018-1010R1) for 

manufacturers/approval holders interested in applying for Surgical N95 FFR approval under the 

consolidated NIOSH and FDA MOU. Applicants MUST follow the guidance and should expect approval 

timelines based on this notice.

Effective immediately and including applications accepted by NIOSH prior to publication of this 

notice, NIOSH will prioritize applications in the order described below: 

1) Domestic approval holders submitting a new or an extension application, including a new or

extension application using the SN95 Guidance. NOTE: This does NOT include claims about

barrier performance based on ASTM 2100-19, Standard Specification for Performance of

Materials Used in Medical Masks, or claims exceeding the threshold limitations defined in the

NIOSH/FDA MOU.

2) Domestic and international approval holders submitting Quality Assurance (QA) applications

to facilitate FFR, APR, and PAPR production at additional manufacturing sites, in accordance

with established and NIOSH-approved QA systems.

Subject: Effective Immediately - In response to COVID-19 – UPDATED NIOSH 

prioritization for accepting and examining particulate filtering respirator approval 

applications, including Surgical N95 respirators, submitted by existing approval 

holders, new domestic manufacturers/applicants, and new international 

manufacturers/applicants

Supersedes NIOSH CA 2020-1027
Document Number

NIOSH CA 2020-1031

Page 3 of 3

3) New domestic applicants: NIOSH has developed procedures to conduct virtual domestic site

qualification evaluations of new domestic manufacturing and quality management facilities,

for applicants seeking their first NIOSH approval for an FFR, APR, or PAPR. Alternatively,

NIOSH may use a contractor to conduct the site qualification visit.

4) International approval holders submitting a new application using the SN95 Guidance. NOTE:

This does NOT include claims about barrier performance based on ASTM 2100-19, Standard

Specification for Performance of Materials Used in Medical Masks, or claims exceeding the

threshold limitations defined in the NIOSH/FDA MOU.

5) International approval holders submitting a new or extension application.

6) New international applicants submitting a new application using the SN95 Guidance, with

priority given to products manufactured in Canada and Mexico. Timelines will depend on the

ability to arrange and complete initial site qualification visits. NOTE: This does NOT include

claims about barrier performance based on ASTM 2100-19, Standard Specification for

Performance of Materials Used in Medical Masks, or claims exceeding the threshold

limitations defined in the NIOSH/FDA MOU.

7) New international applicants, with priority given to products manufactured in Canada and

Mexico. Timelines will depend on the ability to arrange and complete initial site qualification

visits.

8) New international applicants re-submitting a new application after a prior denial was issued

by NIOSH. Timelines will depend on the ability to arrange and complete initial site

qualification visits.

Once NIOSH approved, the respirators will be added to the NIOSH Certified Equipment List and will 

thus be covered under the FDA’s clarification letter and Emergency Use Authorization (EUA), dated 

March 28, 2020 for use by healthcare personnel. 

The prioritization listed above will further impact NIOSH’s ability to process requests received from

new international respirator manufacturers for manufacturers’ codes and to answer their questions 

related to the Approval Program. Additionally, due to ongoing, heightened concerns over 

counterfeiting, NIOSH will not respond to emails that lack recognizable company domains. Examples 

include emails that look like 3894876@hotnet.net, cv2009@vip.126.com, or 3273865@qq.com. 

NIOSH will only respond to inquiries for approval received from an email address recognizably 

associated with a legitimate business or stakeholder.