Device for measuring certain properties of particles suspended i

Details Device for measuring certain properties of particles suspended i Device for measuring certain properties of particles suspended i

1978-11-13

1981-02-24

Strecker, Gerard R.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

G01N 1507, G01N 2707

Patent

active

042530580

ABSTRACT:
In a so-called Coulter-device with a first and a second chamber, a separag wall between them and a measuring aperture in the separating wall, through which particle-free electrolyte flows from the first chamber into the second chamber, and with first and second electrodes in the first and second chamber resp., at which a measuring impulse indicating a certain property (e.g. volume) is derived upon the passage of a particle, which is supplied to it through a supply capillary ending in front of the measuring aperture, the improvement consisting in means to supply additional particle-free electrolyte to the particle stream at and/or in the neighborhood of the downstream end of the measuring aperture to deflect those particles, which, after passage through the measuring aperture, travel backward to the same and cause error impulses.

REFERENCES:
patent: Re28558 (1975-09-01), Hogg
patent: 3299354 (1967-01-01), Hogg
patent: 3793587 (1974-02-01), Thomet et al.
patent: 4014611 (1977-03-01), Simpson et al.
patent: 4140966 (1979-02-01), Godin et al.
patent: 4157498 (1979-06-01), Johnson
patent: 4165484 (1979-08-01), Haynes

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