Apparatus for analyzing the size distribution and quantity of sm

Details Apparatus for analyzing the size distribution and quantity of sm Apparatus for analyzing the size distribution and quantity of sm

1977-02-09

1978-10-31

Clark, Conrad J.

Optics: measuring and testing

With sample preparation

Depositing particles on optical surface

356102, G01N 100, G01N 1502

Patent

active

041231597

ABSTRACT:
An apparatus for analyzing the size distribution and quantity of small particles in an aerosol comprises at least one smooth filter bearing a reflecting coating and means for measuring the change in reflectance due to the deposition of intercepted particles. At least one additional filter contains linear pores extending substantially normal to the filter surface and has a negligible transmission outside the pores. Also realized are means for measuring the change in transmission due to the retention of particles in and around the pores.

REFERENCES:
patent: 3942360 (1976-03-01), Wada

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