Driven guard shield for FD223AP probe

Protect your results from unnecessary interference

Electrical equipment located too near the recording site may induce AC line noise. Electrostatic shielding may by necessary in unusually bad recording locations. Shielding can be a grounded Faraday cage completely surrounding the preparation, probe and preamplifier or in some cases this small wound spring can be slipped over the probe tip to serve as a “driven guard” and electrode shield.