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Respirator filter penetration using sodium chloride aerosol.
Ferber-BI; Brenenborg-FJ; Rhode-A
NTIS: PB 193 206, 1970; :1-10
Sodium chloride aerosol was employed to determine respirator filter penetration in a manner suitable for use in Bureau of Mines approval and certification procedures. The aerosol was produced by an ultrasonic generator and treated to yield the proper conditions of relative humidity, particle size, and concentration. Respirator filters were exposed to the aerosol; filter penetration (down to 0.02 percent) was determined with a flame photometer. Results are comparable with those obtained in another laboratory using different equipment.
Respirators; Respiratory-equipment; Aerosols; Testing-equipment; Filters; Filtration; Aerosol-generators; Laboratory-testing
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 193 206
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division