Method for measuring the relative concentration of larger and sm

Details Method for measuring the relative concentration of larger and sm Method for measuring the relative concentration of larger and sm

1985-02-21

1987-02-17

Nelms, David C.

Optics: measuring and testing

By particle light scattering

With photocell detection

356342, G01N 2149

Patent

active

046435735

ABSTRACT:
The concentration of larger particles in a suspension of relatively small and relatively large light scattering particles is determined by illuminating a zone of the suspension with light of such wavelength as to be scattered more efficiently by the larger particles than by the smaller particles. The scattered light is collected and its intensity measured. The value of the collected light intensity then is compared with the corresponding value of the same wavelength light scattered by corresponding suspensions containing known concentrations of particles.

REFERENCES:
patent: 3714444 (1973-01-01), Carr et al.
patent: 3962581 (1976-06-01), Zimmerman

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