Test criterion for three consecutive test pieces of the same thickness:
a. Highest temperature at which the flames or glowing are extinguished within
_30s of removing the glow wire.
b. In addition, the tissue paper underlay beneath the test specimen must not ignite.
c. The test specimen does not ignite.

GWIT (Glow wire ignitability test)
This test is used to determine the glow wire ignitability temperature.

Pre-treatment:
48 h/23 °C/50 % rel. humidity

Test criterion for three consecutive test specimen of the same thickness:
The highest temperature at the end of the glow wire at which there is no ignition during the contact time (ignition that lasts for longer than 5s).
The glow wire ignition temperature is the temperature that is 25 °C higher (30°C higher if between 900°C and 960°C) than the highest temperature measured at the end of the glow wire.

End product
This test is used to determine the flammability of end products.

Pre-treatment:
24 h/23 °C/50 % rel. humidity

Test criterion:
a. No flame formation or no glowing.
b. Flames or glowing extinguished within 30s of the glow wire being removed.
c. Tissue paper used as underlay does not ignite.