The standard specifies a set of requirements and test methods to measure protection against static electricity or charge decay. Electrostatic resistance is required when the worker is exposed to environments where a spark could cause explosions or ignite fires (e.g. gas and petrol stations, petrol tanker drivers, flour mills, etc). Persons who wear such clothing must be safely and properly grounded. Clothing must be worn fully closed, with no gaps caused by other fabrics.

EN 1149-1

Test method for measuring the surface resistance in ohms(the lower the resistance, the quicker the charge can flow or discharge). The procedure can only be used for materials that also have a conductive surface, such as carbon or steel fibre.

EN 1149-3

Test method for measuring the rate of charge dissipation to 50% of the output charge(the quicker the better) and the shielding effect against the electric field(the higher the better).

EN 1149-5

Performance requirements for clothing material and design. The material must be certified either in accordance with EN 1149-1 or EN 1149-3.