Compositions – Inorganic luminescent compositions – Tungsten containing
Patent
1991-05-31
1992-11-03
Lovering, Richard D.
Compositions
Inorganic luminescent compositions
Tungsten containing
252321, 252358, 261 181, 261 782, 239338, C09K 330, B01F 502
Patent
active
051606640
ABSTRACT:
An aerosol generator used to produce, selectively and rapidly, an aerosol that has a specific particle size and is at a known specific concentration. The generator comprises a plurality of aerosol material atomizers that can be selectively used to obtain different atomized aerosol particles that results in different size when combined with the output of a particle seed atomizer. Particles can be selectively operated to provide, quickly and conveniently, a range of individual particle sizes. The seed atomizer output is mixed with the aerosol atomizer output and passed through a unique, compact heating section for heating the mixture in a manner to provide a high flow rate with low pressure drop. The fluid is passed through a condenser to condense known size particles in the fluid stream, which then can be used as desired, for example to test the efficiency of filters.
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Article by Benjamin Y. H. Liu et al., entitled A Condensation Aerosol Generator for Producing Monodispersed Aerosols In the Size Range, 0.036.mu. to 1.3.mu., "Journal de Recherches Atmospheriques", pp. 397-406, 1966.
Bhat N.
Lovering Richard D.
MSP Corporation
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