In real life, there will inevitably be fire hazards, such as fire accidents caused by textiles, plastics or decorative materials and the other combustibles. Products with good flame retardant properties burn slowly, which can make us quickly evacuate from the burning site or get away from the burning items, thus avoiding harm.

Oxygen index is one of the key index to judge the flame retardant performance of the materials, which refers to the volume fraction of the lowest oxygen required for the sample to maintain balanced combustion in the mixed air flow of oxygen and nitrogen under specified conditions. The oxygen index tester is used to measure the minimum oxygen concentration required for material combustion, so as to judge the difficulty of material combustion when it is in contact with flame in air. The higher oxygen index, the better flame retardant performance of the material.

This equipment the oxygen sensor is adapted paramagnetic type, and the accuracy is less than 0.1%, automatic calculation, saving artificial energy. High quality quartz glass cube, which can withstand higher temperature and heat resistance. Optimized design of gas pipeline, quick response and high efficiency. Comply with ASTM D2863, ISO4589-2:1996, GB 8642:2012, GB/T 2406:2009, GB/T 10707:2008 and NES 714 standards.

More details please refer to https://www.firetestingequipment.com/oxygen-index-tester-paramagnetic.html