1. Product introduction Used to determine the volume ratio of oxygen required during polymer combustion: determine the minimum oxygen concentration (also known as the oxygen index), expressed as a percentage of volume, in the mixture of oxygen and nitrogen under specified conditions to maintain the combustion of the sample. 2. standard of execution GB／T2406—2008 GB／T5454—1997 3. Main technical parameters 1）周囲温度：室温〜40℃。相対湿度: ≤70%。 2）電源電圧：AC220V 0.1kw; 3）ガス源：工業用窒素および酸素、純度＞99％。 4）入力圧力：0.25〜0.5mpa;使用圧力: 0.1~0.2mpa; 5）電圧安定化精度: ≤0.001 Mpa/min;測定精度: 0.2; 6）応答時間: < 5s; 7）デジタル分解能: ±0.1%。 8）外形寸法：長さ0.36×幅0.28×高さ0.54m。重量：24kg。