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Precision Instrument for microelectrode quality control
The impedance value of a metal microelectrode for neurophysiological research is a very important parameter to characterize the recording performance of the microelectrode.
The Metal Electrode Impedance Tester Model EIT-201 is a precision instrument for measuring metal electrode impedance at a frequency of 1kHz. It is designed as a bench-top model.
The model EIT-201 will measure electrode impedance in the two ranges 100k...1M and 1M...10M and displays the impedance value on an easy to read high quality digital liquid-crystal-display (LCD).
The EIT-201 has its own sine wave oscillator integrated which generates a very stable 1kHz sine wave test signal. The electrode impedance is measured with a constant current of 5nA. The EIT-201 measuring circuit is largely unaffected by microelectrode offset or tip junction potentials.
A special designed stainless steel laboratory stand is provided with the system.
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