A Standard Test Method for Initial Efficiency Measurements on Flatsheet Filter Media

Robert Nicholson

doi:10.1520/STP42086S

SYMPOSIA PAPER Published: 01 January 1986

STP42086S

A Standard Test Method for Initial Efficiency Measurements on Flatsheet Filter Media

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Reproducible initial efficiency measurements on flat sheet filter media in air, require well controlled test aerosols for particle count and particle size resolution. This Test Standard drafted by ASTM F21.20 Subcommittee on Gas Filtration utilized the atomization of monodispersed latex spheres and particle counting by Optical Particle Counters to measure the initial, particle size efficiencies of flatsheet filter media. A test system and procedure is defined that can provide a ±1% reproducibility on initial penetration in the particle size range of 0.5 to 5 μm at a 95% confidence level.

Author Information

Nicholson, Robert, M.

Corporate Technology of the Donaldson Co., Inc., Minneapolis, MN

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Details

Developed by Committee: F21

Pages: 141–151

DOI: 10.1520/STP42086S

ISBN-EB: 978-0-8031-6046-0

ISBN-13: 978-0-8031-6200-6

A Standard Test Method for Initial Efficiency Measurements on Flatsheet Filter Media

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