Electric ignition source GWFI

Glow Wire Flammability Testing

This method is used to determine the glow wire flammability index of a test specimen by means of a glow wire loop.

GWFIGlow Wire Flammability Testing
Test setup Test setup


48h / 23°C / 50 % relative humidity


Test temperature in °C 550 600 650 700 750 800 850 900 960
Exposure time 30 s
The specimen is considered to have passed the test if the following conditions are satisfied:
  • The longest sustained flame or glow is extinguished within 30 s of removing the glow wire tR
  • The specimen is not completely burned
  • The tissue paper does not ignite

Test method: Electrical ignition source Test method: Electrical ignition source