This brush is approved for ESD characteristics under the following test standards: ESD TR53-01-06, Compliance Verification of ESD Protective Equipment and Materials by the ESD Association (USA); ASTM D-257-78, Electrical Resistance Measurement Methods of Insulating Materials; CENELEC/TR 50404-2003, Electrostatics – Code of Practice for the Avoidance of Hazards Due to Static Electricity; and IEC 60079-32-2/Ed1, Explosive Atmospheres – Part 32-2: Electrostatics Hazards – Tests.