The PWHC2 oxygen index tester complies with the standard national standards such as the oxygen index method GB/T2406 and the textile combustion performance test oxygen index method GB/T5454. It is used to evaluate the combustion performance of polymers under the specified test conditions, that is, determine The polymer just maintains the lowest oxygen concentration by volume for combustion. It is suitable for the determination of the combustion performance of plastic, rubber, fiber, foam plastic, soft sheet, film, textile and wood materials. This instrument is an accurate, reproducible, convenient and quick testing instrument for measuring the flammability of polymers. This instrument can not only be used as a means of identifying the flame retardancy of polymers, but also as a research tool.