Assessment of Non-NIOSH Approved Innovative FFRs

Organization: JJnJJ LLC

Date Tested: 3.26.2021

Respirator Model(s): Bal-Blk-A (Balaclava-style Mask), Bnd-Blk-A (Bandana-style Mask), Loop-Blk (Ear Loop-style 

mask), Filters

Tests: Filtration with NaCl (modified version of STP-0059)

This test result is for a filtering facepiece mask not approved by NIOSH or by any other international standards 

(e.g., China-KN95, Korea KFN94, UK FFP2 & FFP3, Australia P2, P3, Japan DS/DL2 & DS/DL3). The test conducted 

for this report is for filtration efficiency and is not equivalent to the test for NIOSH respirator certification per 

NIOSH test procedure STP-0059.

This assessment provides the filtration performance of an innovative respirator using a modified version of 

NIOSH test procedure STP-0059. This assessment does not include an evaluation of the fit of these respirators. 

Use of these innovative respirators in occupational settings would be contingent upon approval by the 

appropriate regulatory agency. 

Filtration Efficiency Results: The minimum and maximum filter efficiencies were as follows: Bal-Blk-A (38.6% 

and 49.7%), Bnd-Blk-A (35% and 39.3%), Loop-Blk (33.8% and 36.3%), and Filter (20.3% and 21.5%). None of the 

masks or filters measured more than 95% efficiency. See Table 1.
Figure 1: Masks evaluated. A) Bal-Blk-A, Balaclava-style Mask. B) Bnd-Blk-A, Bandana-style Mask. C)

Loop-Blk, Ear Loop-style Mask. D) Filter only as provided for testing. 

 

Figure 2: Laboratory Test Photo (TSI, Inc. 8130 filter tester). A) Bal-Blk-A, Balaclava-style Mask. B)

Bnd-Blk-A, Bandana-style Mask. C) Loop-Blk, Ear Loop-style Mask. D) Filter only as provided for 

testing.

A B C

D

A B C D
Table 1. Filter Efficiency Evaluation

Notes:

• 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 necessarily meet the requirements of STP0059, and therefore cannot be considered equivalent to N95 respirators that were tested to STP-0059. 

• BOLD filter efficiencies < 95%.

Respirator 

Model

Sample 

#

Flow 

Rate

(Lpm)

Initial 

Filter 

Resistance

(mmH2O)

Initial 

Percent 

Leakage

(%) 

(1 min)

Final 

Percent 

Leakage 

(%) 

(5 min)

Percent 

Leakage 

Variance 

(%)

Maximum 

Percent 

Leakage 

(%)

Filter 

Efficiency 

(%)

Bal-Blk-A

Min: 38.6%

Max: 49.7%

1

85 2.5 60.000 60.300 -0.300 61.300 38.700

2

85 2.5 46.500 49.400 -2.900 50.300 49.700

3

85 2.9 55.600 59.000 -3.400 59.200 40.800

4

85 3.0 58.600 61.400 -2.800 61.400 38.600

5

85 2.5 51.900 53.500 -1.600 53.500 46.500

Bnd-Blk-A

Min: 35.0%

Max: 39.3%

1

85 2.5 63.000 64.700 -1.700 65.000 35.000

2

85 2.5 63.100 63.900 -0.800 64.000 36.000

3

85 2.5 61.700 63.000 -1.300 64.400 35.600

4

85 2.2 59.400 60.900 -1.500 60.900 39.100

5

85 2.5 60.300 60.100 0.200 60.700 39.300

Loop-Blk

Min: 33.8%

Max: 36.3%

1

85 3.0 63.000 65.700 -2.700 66.200 33.800

2

85 2.8 63.500 63.900 -0.400 64.000 36.000

3

85 2.9 65.600 65.200 0.400 66.100 33.900

4

85 2.2 62.300 64.800 -2.500 64.800 35.200

5

85 2.9 63.200 63.700 -0.500 63.700 36.300

Filters

Min: 20.3%

Max: 21.5%

1

85 2.0 77.600 79.000 -1.400 79.200 20.800

2

85 2.4 76.800 78.600 -1.800 78.600 21.400

3

85 1.6 76.200 78.500 -2.300 78.500 21.500

4

85 1.7 77.000 78.800 -1.800 79.300 20.700

5

85 2.2 79.600 79.700 -0.100 79.700 20.300