A non-medical mask with medical performances

Scientifically Engineered Stedair® Prevent AMT’s filter barrier is the key to the mask’s effectiveness.

Type

Prevent AMT N95 Surgical Mask Homemade Mask

Intended User

General public

Health care workers

Health care workers

General public

Bacterial Filtration Efficiency (BFE) > 95%

Particle Filtration Efficiency (PFE) > 65%

Breathability

Liquid & Blood Resistance

Flame Resistance

Washable & Reusable

Tested by third-party accrediated laboratory

Tested and approved by IRSST

The institute of research Robert-Sauvé in health and security in the workplace

Performance metrics

How Stedair® Prevent is tested

The Bacterial Filtration Efficiency (BFE)

Particle Filtration Efficiency (PFE)

Breathability

Synthetic Blood Resistance

Flame Resistance

The Bacterial Filtration Efficiency (BFE)

This test is performed on filtration materials and devices that are designed to provide protection against biological aerosols, such as face masks, surgical gowns, caps, and air filters.

The test measures the percentage of bacteria larger than 3 microns filtered out by a mask.

Particle Filtration Efficiency (PFE)

This test measures the percentage of particles larger than 1 micron filtered out by the mask.  It evaluates the nonviable particle retention or filtration efficiency of filter media and other filtration devices at sub-micron levels. This test is performed on face masks and all filter material that allows 1 cubic foot per minute (CFM) flow to pass through it.

Breathability

Test performed to determine the breathability of masks by measuring the differential air pressure on either side of the test article.

Synthetic Blood Resistance

This test is performed on filtration materials that are designed to provide protection against biological aerosols, such as face masks, surgical gowns, caps, and air filters.

The test evaluates the resistance of a mask to penetration by a small volume (~2 mL) of synthetic blood at a high velocity (80 mmHg, 120 mmHg, or 160 mmHg). The mask either passes or fails based on visual evidence of synthetic blood penetration.

Flammability

The test evaluates the flammability of medical textiles including face masks, surgical gowns, and drapes.

Composition

Interior layer: 100% polyester

Filter barrier

Exterior layer: 100% polyester

Standard

Result

Bacterial Filtration efficiency (BFE) (%)

ASTM F2101-19 and EN 14683:2019, Annex B

99.9

Differential Pressure (Pa/cm²)

EN14683:2019, Annex C

48.3

Synthetic blood resistance (mmHg)

ASTM F1862/F1862M-17

120

Particle Filtration efficiency at 0,1 um (PFE) (%)

ASTM F2299

87.7

Flame Spread

16 CFR Part 1610 (1-1-16 Edition)

Class 1

About Stedair® Prevent

Stedair® Prevent is the leader in particulate blocking technology, initially developed for firefighters and CBRN hoods to prevent harmful carcinogens from entering the bloodstream, the same level of protection is found in our Prevent AMT face covering.