The UL94 flame chamber is a test device for testing the combustion properties of materials and is widely used in the electronics, building materials, automotive and other industries. The following are the operating methods and precautions for this tester: Operation method: (1) Place the sample to be tested on the tester's sample holder and adjust the position and height of the sample so that it is perpendicular to the flame. (2) Ignite the tester's flame and adjust the flame height and angle to meet the test requirements. http://burningtester.com/news/612.html (3) The tester will automatically record the burning time and afterburning time of the sample and assess the burning performance of the sample based on the test results.