Optics: measuring and testing – With sample preparation – Depositing particles on optical surface
Patent
1975-11-11
1977-09-13
McGraw, Vincent P.
Optics: measuring and testing
With sample preparation
Depositing particles on optical surface
209214, 356 70, 356 72, 356 73, 356201, 356206, G01N 100, G01N 3328
Patent
active
040478149
ABSTRACT:
The concentrations of hyperfine particles in a fluid are monitored by flowing a predetermined quantity of the particle-containing fluid over a substrate in the presence of a force field which "collects" the particles onto the substrate. The particles may be deposited on the substrate according to size, so that one can readily ascertain not only the particle concentration in the fluid, but the size distribution of the particles as well. This technique greatly concentrates the particles so that one can usually detect and monitor materials having extremely small particulate concentrations in the fluid from which they are collected.
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McGraw Vincent P.
Trans-Sonics, Incorporated
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