Recommended methods and standardized reporting practices for electrical characterization of carbon nanotubes are covered. Due to the nature of carbon nanotubes, significant measurement errors can be introduced if the electrical characterization design-of-experiment is not properly addressed. This standard describes the most common sources of measurement error, particularly for high-impedance electrical measurements commonly required for carbon nanotubes. This standard also gives recommended practices in order to minimize and/or characterize the effect of measurement artifacts and other sources of error encountered while measuring carbon nanotubes.