Image by John Rodenn Castillo

HOW DOES OUR MASK COMPARE TO ASTM LEVELS 1, 2 AND 3?

 

ASTM LEVEL 1

Low fluid resistance: 80 mmHg

Filtration efficiency: BFE ≥ 95%

          BFE at 0.1 microns ≥ 95%

Breathability (Delta P): < 4.0 mm H2O/cm^2

ASTM LEVEL 2

Moderate fluid resistance: 120 mmHg

Filtration efficiency: BFE ≥ 98%

          BFE at 0.1 microns ≥ 98%

Breathability (Delta P): < 5.0 mm H2O/cm^2

ASTM LEVEL 3

Moderate fluid resistance: 160 mmHg

Filtration efficiency: BFE ≥ 98%

          BFE at 0.1 microns ≥ 98%

Breathability (Delta P): < 5.0 mm H2O/cm^2

NIOSH APPROVED N95  RESPIRATOR

High fluid resistance: 160 mmHg

Filtration efficiency: BFE ≥ 99.9%

          BFE at 0.1 microns ≥ 99.9%

Breathability (Delta P): < 5.0 mm H2O/cm^2

AIR QUEEN NANOFIBER MASK

Fluid resistance: 160 mmHg

Filtration efficiency: BFE ≥ 99.9%

          BFE at 0.1 microns ≥ 99.9%

Breathability (Delta P):  5.3 mm H2O/cm^2

 
Image by Nikola Majksner

PRODUCT TESTING


AIR QUEEN NANOFIBER MASK COMPARED TO N95 RESPIRATOR


Unequivocally, the Air Queen and Airbon Nanofiber filter masks are NOT certified as an N95 respirator and is therefore NOT NIOSH approved. This is partially due to the Air Queen Nanofiber filter mask having an ear loop design, while NIOSH approval requires a head strap to secure the device to the user.


However, with the performance results below, many testing parameters of the Air Queen Nanofiber filter mask portray similar or superior performance metrics when compared to those of a N95 respirator.

 

FILTER PERFORMANCE

Air Queen Mask: 91-97%

N95 Respirator: 95%

The Air Queen Nanofiber Mask has a filtration rate in the range of a NIOSH certified N95 Respirator.

The filter measures the decrease in concentration of the given aerosols in air that goes through the filter (i.e. the mask).

TEST AGENT FOR FILTER PERFORMANCE

Air Queen Mask: NaCl and paraffin oil

N95 Respirator: NaCl

Paraffin oil and salt (NaCl) filter performance is required for Korean certification.


NaCl (salt) filter performance is the only metric required to be tested for American standards (i.e. no oil filter performance is tested).

TOTAL INWARD LEAKAGE (TESTED ON HUMAN SUBJECTS PERFORMING EXERCISES)

Air Queen Mask: ≤ 2.5% Leakage

N95 Respirator: N/A

Total inward leakage is the amount of aerosol that enters the facepiece via filter penetration and the leakage associated with the face seal, while the wearer performs exercises in the test chamber.

N95 certified respirators are NOT required to test this parameter, therefore the total inward leakage for an N95 certified respirator is not known.

More typical inward leakage for FFP2 (Europe), KN95 (China) and P2 (Australia/New Zealand) certified masks are approximately 8% leakage. Therefore, the Air Queen Nanofiber Mask ( approximately 2.5% leakage) has less than one third of the leakage compared to the certifications required in Europe, China, Australia and New Zealand.

INHALATION RESISTANCE (MAX PRESSURE DROP)

Air Queen Mask: ≤ 33 Pa (at 30 L/min)

                                ≤ 112 Pa (at 95 L/min)

N95 Respirator: ≤ 343 Pa (at 85 L/min)

The inhalation resistance effectively refers to how difficult the mask is to breathe through while inhaling air (breathing in).

The N95 respirator has a higher pressure drop across the filter upon inhalation, indicating more effort is needed to inhale air (breath in) when wearing the mask.

The Air Queen Nanofiber Mask experiences less resistance when moving air through the mask, thereby making it easier to inhale air (breath in) when the mask is worn.

EXHALATION RESISTANCE (MAX PRESSURE DROP)

Air Queen Mask: ≤ 175.1 Pa

N95 Respirator: ≤ 245 Pa

The exhalation resistance effectively refers to how difficult the mask is to breathe through while exhaling air (breathing out).

The N95 respirator has a higher pressure drop across the filter upon exhalation, indicating more effort is needed to exhale air (breathe out) when wearing the mask.

The Air Queen Nanofiber Mask has a lower pressure drop when moving air through the mask, thereby making it easier to exhale air (breath out) when the mask is worn.

FLOW RATE DURING FILTER PERFORMANCE

Air Queen Mask: 95 L/min

N95 Respirator: 85 L/min

The flow rate for the Air Queen Nanofiber Mask was 10L/ min higher than that of the N95 respirator, yet the Air Queen Nanofiber Mask achieved a similar filter performance.

 

FORCE APPLIED

Air Queen Mask: -245 Pa

N95 Respirator: N/A

The flow rate for the Air Queen Nanofiber Mask was 10L/ min higher than that of the N95 respirator, yet the Air Queen Nanofiber Mask achieved a higher filter performance.

CO2 CLEARANCE REQUIREMENT

Air Queen Mask: ≤ 1%

N95 Respirator: N/A

Korean standards require masks, including the Air Queen Nanofiber Mask, to be tested for CO2 clearance, which prevents CO2 from building up within the mask.

N95 respirators do NOT have this requirement or test for this, making their CO2 clearance unknown.

 
Crowd with Masks

Other testing parameters for the Air Queen Nanofiber Mask:

The average particle filtration efficiency (PFE) was determined to be 99.9% using pollen as the particle sample.


The average bacterial filtration efficiency (BFE) was determined to be greater than 99.9% using Staphylococcus

aureus ATCC 6536 as the bacterial sample.


The average differential pressure (delta P or pressure loss) was determined to be 5.3 mm H2O/cm^3.  The differential pressure is a marker for the breathability of the filter, where higher values indicate greater breathing difficulty...For NIOSH N95 certification, the respirators must have a minimum delta P value of 5.0 mm H2O/cm3 or greater. With a delta P value of 5.3 mm H2O/cm3 and meeting the threshold for the N95 criteria, the Air Queen Nanofiber Mask provides great breathability for the levels of protection and filtration it offers. This allows for long term comfort and ease of breathing, while being protected from harmful agents.

The composition of the Air Queen nanofiber material was tested for the presence of 174 different substances classified by the European Chemicals Agency (ECHA) as being a “very high concern” for human health.  With a series of standardized tests performed by SGS, results demonstrated no trace amounts of these substances whatsoever, thereby meeting the criteria required by the ECHA. Therefore, this ensures that the patented nanofiber technology is safe for everyday use