Resistivity

Volume and Surface Resistivity Measurements of Insulating Materials

Aug. 24, 2021
Discover techniques for making volume and surface resistivity measurements of insulating materials, using an electrometer/high resistance meter, as well as tips on how to ensure test system safety.

The resistivity of an insulator is measured by sourcing a known voltage, measuring the resulting current, and calculating the resistance using Ohm’s Law.  Measuring insulators involves very low currents, which require special techniques to ensure accuracy and repeatability. This application note covers making volume and surface resistivity measurements of insulating materials, using an electrometer, as well as tips on how to ensure test system safety.

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