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  3. EN 1149 antistatic properties

EN 1149 antistatic properties

The EN 1149 standard specifies the requirements of electrically conductive workwear. Anti-static workwear and work shoes prevent the generation of sparks due to electrostatic charging. These sparks are very dangerous and can cause fire or an explosion. Antistatic workwear with this standard is often used in organisations that adhere to the ATEX directives. EN 1149 is an umbrella standard for the five test methods listed below.

EN 1149-1: test method for measuring surface resistivity
EN 1149-2: test method for measuring electrical resistance through material (vertical resistance)
EN 1149-3: test method for measurement of charge decay
EN 1149-4: test method for the garment
EN 1149-5: performance requirements

A number of additional requirements apply to EN 1149. For example, the clothing may not be used in oxygen-enriched areas and does not protect against the hazards of mains voltage. In addition, the following requirements apply.

  • The model must comply with the conditions set out in EN 340;
  • Materials that can charge, such as steel buttons, should be concealed on the outside;
  • Only workwear that complies with EN 1149 is not sufficient; the user must be fully earthed. This can be done through anti-static footwear that complies with EN 1149;
  • The outer fabric must always make contact with the skin. With winter clothing, it is therefore important that the hem touches the skin;
  • If the clothing complies with EN 1149-5, it must also comply with EN 531 for flame retardant clothing.