Impedance and resistance measurments in biological detection

In many biosensor and sensor applications the measurement of impedance/conductance/resistance is often a way of generating signals for biological events, be it: blood coagulation, endotoxin detection, label free immunoassays, hydration detection etc.


Zimmer and Peacock has a number of technologies which accelerate the development of these assays, including:


1) A spiral electrode which offers a long electrode length in a compact spiral.


2) Test jigs so that samples can be brought to sensors in a reproducible manner.


3) Handheld impedance spectrometers for the generation of the biological event signal.


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In the image above the Zimmer and Peacock customer has modified our spiral sensor and used it in a bio-application where the measurement of conductance was the way of extracting the signal.