Particle length and volume comeasurement with controlled orienta

Details Particle length and volume comeasurement with controlled orienta Particle length and volume comeasurement with controlled orienta

1978-05-18

1981-09-15

Strecker, Gerard R.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

G01N 2700

Patent

active

042900115

ABSTRACT:
A method of and means for controlling orientation of particles through a sensing zone in a particle analyzing system, which facilitates particle shape determination, comprises laminar flow orientation of the particles in a stream moving through an elongate straight passage coaxially aligned with an elongate sensing zone longer than the longest particle to be sensed and analyzed. The particles are carried through the sensing zone in an isokinetic laminar flow sheath of fluid.

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Spielman et al., "Improving Resolution . . . by Hydrodynamic Focusing", Journal of Colloid and Interface Science 26, 1968, pp. 175-182.
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Thom; R., Vergleichende Untersuchungen zur Electronischen Zellvolumen-Analyse, Telefunken (Chap 6)-Translation Nov. 1976.

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