Measurement of Electrical Resistance of Insulating Materials

This paper describes means of overcoming some difficulties which occur when the resistance of insulating materials is being measured by electrometer methods and, in particular, by methods involving guarded electrodes. The methods of measurement considered are capable of measuring resistances up to about 10 16 Ω. Some non-standard items of the test equipment are described and details about the routine use of a Lindemann electrometer are also given.