With predetermined size (Φ 0.9 mm) needle burner, in 45°angle burning product, measure the fire risk by product light-off or hold burning time.

Used for lighting, low voltage electric appliance, household appliances, electric machine, motor, electric tools, electronic instrument, electrical instrument, electrical connector such as electrical and electronic equipment and parts, components of research, production and quality inspection department, also suitable for insulation materials, engineering plastics.