{"id":2119,"date":"2025-06-13T06:51:42","date_gmt":"2025-06-13T06:51:42","guid":{"rendered":"https:\/\/qibrit.com\/innovare\/?page_id=2119"},"modified":"2025-06-13T06:53:10","modified_gmt":"2025-06-13T06:53:10","slug":"en-1149","status":"publish","type":"page","link":"https:\/\/qibrit.com\/innovare\/en-1149\/","title":{"rendered":"EN 1149"},"content":{"rendered":"

[vc_row][vc_column][vc_column_text]<\/p>\n

EN 1149 \u2013 Protection Against Electrostatic Discharge<\/h4>\n

[\/vc_column_text][vc_column_text]Overview<\/strong>
\nEN 1149 is a multi-part standard that specifies test methods and performance requirements for protective clothing and fabrics designed to prevent electrostatic discharge. This type of protection is essential in environments where flammable gases, vapors, powders, or dusts are present\u2014such as fuel handling, chemical manufacturing, pharmaceuticals, and grain processing facilities. In these settings, a small static spark can be enough to ignite an explosive atmosphere.<\/p>\n

EN 1149 consists of several parts that apply to different aspects of electrostatic behavior. For fabric manufacturers, the most relevant parts are EN 1149-1, EN 1149-2, and EN 1149-3. These methods test whether a fabric can safely dissipate electrostatic charges. EN 1149-5 is the performance standard used at the garment level, which requires the fabric to meet one or more of the mentioned test methods.<\/p>\n

Testing Methods & Minimum Performance Levels<\/strong><\/p>\n\n\n\n\n\n\n\n
Test Method<\/strong><\/td>\nDescription<\/strong><\/td>\nRequirements<\/strong><\/td>\n<\/tr>\n
EN 1149-1 <\/strong><\/td>\nSurface Resistivity Method<\/em><\/strong>
\n<\/em>Measurement of surface electrical resistance:This method evaluates the ability of a fabric to allow static electricity to dissipate along its surface.<\/td>\n		\n
    \n
  • Surface resistivity \u2264 2.5 \u00d7 10\u2079 \u03a9<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
EN 1149-2<\/strong><\/td>\n\n

Vertical Resistance Method<\/em><\/strong><\/p>\n

Measurement of vertical (through-thickness) resistance:
\nMeasures how charges pass through the thickness of the fabric-from the outer surface to the skin-facing side.<\/p>\n

\u00a0<\/em><\/strong><\/td>\n

\n
    \n
  • Vertical resistance \u2264 1 \u00d7 10\u2079 \u03a9<\/strong><\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
EN 1149-3<\/strong><\/td>\nCharge Decay Test<\/em><\/strong>
\n<\/strong>Time-based measurement of charge dissipation:This optional method determines how quickly a fabric dissipates an electrostatic charge once the source is removed<\/td>\n		\u00a0<\/strong><\/td>\n<\/tr>\n
EN 1149-5<\/strong><\/td>\n\n

Performance Requirements for Garments<\/em><\/strong><\/p>\n

Defines garment-level compliance<\/p>\n

\u00a0<\/em><\/strong><\/td>\n

\n