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 pa
ASTM
Standard Test Method for Determining the Initial Efficiency of Materials Used in Medical Face Masks to Penetration by Particulates Using Latex Spheres
STD-74574
2003
2010-06-01
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