Low concentration aerosol generator

Details Low concentration aerosol generator Low concentration aerosol generator

1997-04-17

1999-06-29

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Gas or liquid analyzer

G01N 100

Patent

active

059182547

ABSTRACT:
A low concentration aerosol generator capable of generating aerosol partis of a known particle size and count is disclosed. The device includes a substantially hollow drying chamber having a first end, a second end, and a gas circulation means for circulating a gas in a flow through the drying chamber via an inlet means and an outlet means. The first end of the drying chamber has an aerosol droplet generator capable of generating aerosol droplets of a predetermined size and which droplets contain a detectable sample within the drying chamber. The second end of the drying chamber includes a delivery tube having a first orifice arranged within the drying chamber for receiving the detectable sample and a second orifice for allowing the detectable sample to exit the drying chamber. The gas circulation means includes means for generating and regulating the flow of the gas through the drying chamber. The invention also includes a method of generating and delivering a sample particle in a low velocity air stream to an analyzing instrument using the aforementioned device.

REFERENCES:
patent: 4917830 (1990-04-01), Ortiz et al.
patent: 5259254 (1993-11-01), Zhu et al.
patent: 5298967 (1994-03-01), Wells

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