The ASTM F2299 test establishes procedures for measuring the initial particle filtration efficiency of materials used in medical face masks using monodisperse aerosols. This test method uses luminescent particle counts in the 0.1 to μ5.0 m size range and at airflow test velocities of 0.5 to 25 cm/s.
The test procedure measures filtration efficiency by comparing the number of particles in the feed stream (upstream) with that in the permeate (downstream).
This test method measures the initial filtration efficiency of materials used in medical face masks by sampling representative volumes of upstream and downstream latex aerosol concentrations in a controlled airflow chamber. In these tests, materials are exposed to aerosol particle sizes of 0,1 to 5,0 µm and the results are evaluated. This standard provides specific test methods for both manufacturers and users. These tests form the basis of efficiency comparison between medical face mask materials.
However, it does not evaluate the effectiveness of medical face masks in preventing the infiltration of harmful particles. Likewise, the design of the mask and the fit of the mask on the user's face are not within the scope of this test. In addition, this test method is not suitable for evaluating the materials used to ensure the effectiveness of protective clothing against particle risks.
The ASTM F2299 / F2299M standard establishes a method for measuring the initial particulate filtration efficiency of materials used in medical face masks using single face aerosols. This test method uses particle counts from 0,1 to 5,0 µm and airflow test velocities of 0,5 to 25 cm/s. The test procedure measures filtration efficiency by comparing the number of particles in the feed stream with the filtrate.
Values specified in SI units or other units will also be considered standard. The values specified in each system should be used independently of each other, without combining the values in any way.
Our organization also provides testing services to businesses within the scope of laboratory testing services, within the scope of Determining the Initial Efficiency of the Materials Used in ASTM F2299 Medical Face Masks for the Penetration of Particles by Using Latex Spheres. Do not hesitate to contact our laboratory EUROLAB for your testing and certification requests.
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