Method and apparatus for optical discrimination of particles

Details Method and apparatus for optical discrimination of particles Method and apparatus for optical discrimination of particles

G - Physics

01

N

73/59

G01N 21/01 (2006.01) G01N 15/14 (2006.01) G01N 33/48 (2006.01)

Patent

CA 1069724

ABSTRACT OF THE DISCLOSURE Method and apparatus for improved optical discrimination in a total particle population of particles having a significant light absorption characteristic and particles having a significant light scattering characteristic. There is provided in such a method a combination of steps including, directing a beam of light from a source to transversely illuminate at an optical interaction station particles passed one by one through such station, partially obstructing the beam beyond the station for passage or scattered and unscattered portions of the beam, when a particle is in said beam and detecting one of said beam portions. -1-

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