Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1978-02-26
1980-07-01
Prescott, Arthur C.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204299R, G01N 2726, G01N 2728, B01K 500
Patent
active
042105048
ABSTRACT:
The invention is in concern of a method for measuring the electrophoretic mobility of particles in a liquid test sample in order to improve the precision of the electrophoretic measurement and to reduce in particular the operational expenditures in such a method.
By use of considerably simple means a very precise time measurement of the mobility of particles is obtained free from any subjective influences with respect to the selection of the particles to be evaluated and to the time measurement. Accordingly, signals variable with respect to their frequency and visualized on the screen of a monitor are derived from out of video synchronization pulses, said signals are logically combined to the digitalized adjustable image scanning signals, improved in their signal-to-noise ratio.
The output signals of this combination effect a counting operation dependent on the particle mobility.
REFERENCES:
patent: 3909380 (1975-09-01), Day et al.
patent: 4011044 (1977-03-01), Uzgiris
patent: 4046667 (1977-09-01), Goetz
Dammann Ehrhard
Friedel Klaus
Jensen Hans-Ludwig
Pohl Hans-Joachim
Schutt Wolfgang
Jenoptik Jena G.m.b.H.
Prescott Arthur C.
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