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NPPTL Respirator Assessments to Support the COVID-19 Response

Updated April 16, 2021

Important Update

As a consequence of the removal of these crisis capacity strategies, NPPTL will no longer conduct any of the Respirator Assessments to Support the COVID-19 Response.

Non-NIOSH Approved Innovative Filtering Facepiece Respirator Assessment Results

NPPTL has completed testing the filter efficiency and resistance of non-NIOSH approved Innovative filtering facepiece respirator designs.  The results for the products are listed below.

International Assessment Results
Organization Respirator Model Innovation Filtration Efficiency Test Report
Maxi. % Min. %
(Balaclava-style Mask)
N/A 49.7 38.6 Report 4
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(Bandana-style Mask)
N/A 39.3 35.0 Report 4
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JJnJJ LLC Loop-Blk
(Ear Loop-style mask)
N/A 36.3 33.8 Report 4
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JJnJJ LLC Filters N/A 21.5 20.3 Report 4
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Narwall Mask LLC Filter disks tested from Narwall Mask size S/M and Narwall Mask size L/XL Overhead Snorkle with custom filter media 85.2 82.8 Report 1
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Silverline Health N/A N/A 99.494 98.990 Report 2
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Tall Dog Electronics RSCFM1 N/A 96.55 93.20 Report 3
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Note – The test method utilized in this assessment is not the NIOSH standard test procedure that is used for certification of respirators. Respirators assessed to this modified test plan do not meet the requirements of STP-0059, and therefore cannot be considered equivalent to N95 respirators that were tested to STP-0059.