Electricity: measuring and testing – Determining nonelectric properties by measuring electric... – Particle counting
Patent
1981-05-15
1984-02-28
Strecker, Gerard R.
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
Particle counting
G01N 2700
Patent
active
044343981
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.
Berg Robert H.
Karuhn Richard F.
Particle Data, Inc.
Strecker Gerard R.
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