Electricity: measuring and testing – Determining nonelectric properties by measuring electric... – Erosion
Patent
1977-01-28
1978-07-25
Rolinec, Rudolph V.
Electricity: measuring and testing
Determining nonelectric properties by measuring electric...
Erosion
73432PS, G01N 2700
Patent
active
041032292
ABSTRACT:
Apparatus for continuous-flow resistive-particle counting includes an injection jet directed at a counting or sensing orifice, particle-containing electrolyte being pumped through the jet in an amount which is in excess of the volume flow rate normally passing through the sensing orifice. The orifice therefore only detects and analyzes the particles contained in the injected solution and not in the bulk electrolyte disposed within the external vessel. Internal and external electrodes are respectively disposed upon opposite sides of the orifice, that is, within the sensing orifice tube and within the external vessel and the electrical connection between the electrodes is maintained at all times. Performance in measuring erythrocyte and platelet numbers and size is very comparable to that of static, resistive-particle counting. The apparatus further includes a simple overflow, fluidically connected to the external vessel, which serves as a drain for the excessively pumped solution, and the injection jet is vertically and pivotably adjustable so as to properly orient the same with respect to the sensing orifice.
REFERENCES:
patent: 3810010 (1974-05-01), Thom
patent: 3871770 (1975-03-01), Von Behrens et al.
patent: 3902115 (1975-08-01), Hogg et al.
patent: 3941479 (1976-03-01), Whitehead
patent: 3973196 (1976-08-01), Hogg
"Improving Resolution in Coulter Counting by Hydrodynamic Focusing" by L. Spielman & S. L. Goren, Journal of Colloid and Interface Science, 26, 175-182 [1968].
Rolinec Rudolph V.
Sunderdick Vincent J.
The University of Virginia
LandOfFree
Continuous-flow, resistive-particle counting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous-flow, resistive-particle counting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous-flow, resistive-particle counting apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1424007