Particle concentrating sampler

Details Particle concentrating sampler Particle concentrating sampler

1988-09-27

1990-11-27

Hajec, Donald T.

Classifying, separating, and assorting solids

Fluid suspension

Gaseous

55510, 72 2805, B07B 700

Patent

active

049729578

ABSTRACT:
A particle concentrating sampler utilizes a virtual impactor, which is an inertial classifier, for concentrating airborne particles above a cut size into a smaller volume air. The concentrated particles are counted, or collected on impactor plates or by using other collection techniques, such as filters or electrostatic precipitators. The concentration of the larger particles which are of interest for analysis insures that the number of particles, particularly in clean room environments, is sufficient so that a significant sampler or count can be obtained without sampling large volumes of air.

REFERENCES:
patent: 3606733 (1971-09-01), Arstikaitis
patent: 3901798 (1975-08-01), Peterson
patent: 4133202 (1979-01-01), Marple
patent: 4301002 (1981-11-01), Loo
patent: 4590792 (1986-05-01), Chiang
patent: 4670135 (1987-06-01), Marple et al.
patent: 4767524 (1988-08-01), Yeh et al.

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