This standard specifies the requirements for the laboratory testing of the resistivity of specially prepared specimens of plastics rendered conductive by the inclusion of carbon black. The test is suitable for materials of resistivity less than 1000000 ohm cm (10000 ohm m). The result is not strictly a volume resistivity, because of surface conduction, but the effects of the latter are generally negligble.
DS/EN ISO 3915:1999 history
1999DS/EN ISO 3915:1999 Plastics - Measurement of resistivity of conductive plastics