Method of and apparatus for determining the breakdown characteri

Details Method of and apparatus for determining the breakdown characteri Method of and apparatus for determining the breakdown characteri

1979-04-13

1980-09-02

Smith, Alfred E.

Electricity: measuring and testing

Determining nonelectric properties by measuring electric...

Erosion

324446, G01N 2707

Patent

active

042209161

ABSTRACT:
A method of and an apparatus for determining the dielectric breakdown chateristics and size of membrane-sheathed particles such as living-organism cells and the apparent size of such particles after breakdown of the membrane, makes use of two measuring orifices traversed by an electrolyte across which an increasing electric field is applied during the measuring process in which the particles successively traverse one of the orifices. The current through the measuring orifice deviates from the linear with increasing field generated preferably by a sawtooth voltage, the current change being used to measure the particle variables stated.

REFERENCES:
patent: 4055799 (1977-10-01), Coster et al.
patent: 4168460 (1979-09-01), Menke

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