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PQM FreedomAIR
Analyzed by SGS
Fluid Resistance - Mask resistance to penetration by synthetic blood under pressure (mmHg). Higher resistance = higher protection
PFE- Particle Filtration Efficiency - Percentage of particles filtered out at a pore size of 0.1 - 1.0 microns (µ).
BFE – Bacteria Filtration Efficiency - Percentage of particles filtered out at a pore size of 1.0 - 5.0 microns (µ).
DeltaP - Differential Pressure - Pressure drop across mask, or resistance to airflow in mmH2O/cm² . Greater resistance = better protection but less breathability.
FlameSpread- Measures the flame spread of the mask material (Flammability)
Independent Laboratory Testing Conducted by SGS
SGS is the world’s leading inspection, testing and certification company. They have comprehensive techniques for testing non-woven fabrics specific for the medical industry.
The following tests have been conducted externally on PQM FreedomAIR civilian grade face masks.
Below are extractions from the Official SGS report.
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Test Method: ASTM F2299/F2299M-03 (reproved 2017) Determining the Initial Efficiency of Materials used in Medical Face Masks to Penetration by Particles Using Latex Spheres
Testing parameters per ASTM F2100-19 Specification for Performance of Materials Used in Medical Face Masks
4 Ply Mask | Test Area: 45.22cm²
Fluid: Air
Flow Rate: 28.3 lmp
Face Velocity: 10.4 cm/s
Challenge: 0.1µpm (±15% CV) Latex Microspheres (Neutralized)
RESULT: 100% Pass | 99.87% PFE
Table 2. Resistance to Blood Penetration (ASTM F 1862)
Test Parameters
Synthetic Blood Lot : #47201
Test Pressure mmHg: 160
RESULT: 100% PASS
Table 3. Physical Properties
Classifications: Class 1
IBEIndicates the specimen Ignited But Extinguished.
DNIIndicates the specimen Did Not Ignite.
Average calculated based on combusted samples only.
RESULT: 100% PASS
