First, use: AN-100A oxygen index tester is mainly used to determine the concentration of oxygen in the polymer in the combustion process (volume percentage). This machine can be used as a means to identify the combustion performance of the polymer, and it can be used as a relevant research tool, so that the combustion process of the polymer can be obtained better. The instrument is suitable for the test of the burning performance of plastics, rubber, foam, wood and other materials. The result is accurate and the reproducibility is good. It is necessary to study and produce the flame retardant materials..