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Primary Examiner: Mack, John H.
Assistant Examiner: Prescott, A. C.
Attorney: Oujevolk; George B.

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Title: Electrophoretic measurement system including means for determining zone boundries

Abstract: An electrophoretic measurement system for isotachophoresis includes a potential gradient detector, an impedance converter, a voltage to frequency converter, a signal transmission system composed of, for example, electromagnetic wave transmitter means and its receiver spaced therefrom, frequency to voltage converter means, in series connection. This arrangement facilitates insulation of the sensing electrodes of the detector from the ground and prevents a formation of bubbles and deposits on the electrodes, so that the electrophoresis processes are performed under stable condition and high resolution and high sensitivity are obtained. Besides a higher migration current can be used to shorten analysis time.

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Inventors: Haruki, Tatsuro (Nishinomiya, JA)
Akiyama, Junichi (Kyoto, JA)

Application Number: 414970
Filing Date: 1973-11-12
Publication_date: 1976-01-13
Assignee: Shimadzu Seisakusho Ltd. (Kyoto, JA)
Primary Class(es): 204/645 204/402
Other Classes:
US Patent Ref:

3594294	Jul, 1971	Pretorius et al.	204/180.
3725232	Apr, 1973	Pretorius et al.	204/180.
3759816	Sep, 1973	Pretorius et al.	204/299.
3788969	Jan, 1974	DiStefano et al.	204/299.

Other Refs: Other References: Duckworth, "Electricity and Magnetism," Holt, Rinehart, and Winston, N.Y., 1961, pp. 159 & 160.