Particle size sampler

Measuring and testing – Particle size

Reexamination Certificate

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Details

C073S863230, C073S028050

Reexamination Certificate

active

07597015

ABSTRACT:
A particle size sampler includes a cylindrical housing with an inlet end and an outlet end. A pump, connected to an outlet pipe at the outlet end, draws air through the particle size sampler. Aerosols or other particles are removed from the air during a series of filtering steps. The filtering steps include an impactor, a plurality of mesh screens, and a backup filter to remove any particles remaining after the previous filtering steps. The particle size sampler may operate for long periods of time providing a size distribution and concentration of small particles in the air.

REFERENCES:
patent: 3001914 (1961-09-01), Andersen
patent: 3983743 (1976-10-01), Olin et al.
patent: 4740220 (1988-04-01), Mark et al.
patent: 4827779 (1989-05-01), Marple et al.
patent: 5333511 (1994-08-01), Boyum et al.
patent: 6284025 (2001-09-01), Kreisberg et al.
patent: 6576045 (2003-06-01), Liu et al.
patent: 421907 (1974-09-01), None

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