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ASTM F2299/F2299M-24

Current Revision

Standard Test Method for Determining the Initial Efficiency of Materials Used in Medical Face Masks to Penetration by Particulates Using Latex Spheres

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1.1 This test method establishes procedures for measuring the initial particle filtration efficiency of materials using monodispersed aerosols.

1.1.1 This test method utilizes light-scattering particle counting in the size range of 0.1 to 5.0 μm and airflow test velocities of 0.5 to 25 cm/s.

1.2 The test procedure measures filtration efficiency by comparing the particle count in the feed stream (upstream) to that in the filtrate (downstream).

1.3 The values stated in SI units or in other units shall be regarded separately as standard. The values stated in each system must be used independently of the other, without combining values in any way.

1.4 The following precautionary caveat pertains only to the test methods portion, Section 10, of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


5.1 This test method measures the initial filtration efficiency of materials by sampling representative volumes of the upstream and downstream latex aerosol concentrations in a controlled airflow chamber.

5.2 This test method provides specific test techniques for both manufacturers and users to evaluate materials when exposed to aerosol particle sizes between 0.1 and 5.0 μm.

5.2.1 This test method establishes a basis of efficiency comparison between materials.

SDO ASTM: ASTM International
Document Number F2299
Publication Date Feb. 1, 2024
Language en - English
Page Count 8
Revision Level 24
Supercedes
Committee F23.40
Publish Date Document Id Type View
Feb. 1, 2024 F2299_F2299M-24 Revision
June 1, 2017 F2299_F2299M-03R17 Reaffirmation
June 1, 2010 F2299_F2299M-03R10 Reaffirmation