G - Physics – 01 – N
Patent
G - Physics
01
N
324/45
G01N 15/06 (2006.01) G01N 15/12 (2006.01) G01R 27/00 (2006.01)
Patent
CA 1135793
ABSTRACT An improved particle sensing transducer apparatus and method for studying the physical properties of particles suspended in an electrolyte solution. The transducer apparatus includes a first chamber, at least a portion of which contains a quantity of the electrolyte solution with a first electrode disposed therein. A second chamber is provided, at least a portion of which contains a quantity of the electrolyte solution with a second electrode disposed therein. The transducer further includes an orifice for establishing a constricted electrical path by providing a passageway for a sample flow of electrolyte solution containing the particles between the two chambers. The improvement comprises a fluid retarding, ion conducting material, such as a gel, frit or membrane, interposed between the sample flow and at least one of the electrodes so as to pass an ionic current while retarding the electrolyte flow from the electrode.
341427
Borden Ladner Gervais Llp
Coulter Electronics Inc.
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