SS 669-5:2020
Medical face masks – Part 5 : Standard test method for determining the initial efficiency of materials used in medical face masks to penetration by particulates using latex spheres
OVERVIEW
1.1 This test method establishes procedures for measuring the initial particle filtration efficiency of materials used in medical facemasks 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.
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.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 2020 |
| No. of Pages | 22 |
| ICS Classification | 11.120.20 Wound dressings and compresses |
| Committee | Biomedical and Health Standards Committee |
| Available for Purchase | For sale in Singapore only |
| Adoption | ASTM F2299/F2299M-03(2017) : 2017 IDT |