汽车尾气排放标准气0.5%CO/N2,0.5%***，氮气平衡气。1.5%CO+800ppmC3H8/N2,1.5%***+800ppm丙烷，氮气平衡气。3.5%CO+3200ppmC3H8/N2,1.5%***+3200ppm丙烷，氮气平衡气。5.0%CO+6400ppmC3H8/N2,5.0%***+6400ppm丙烷，氮气平衡气。可用4、8升铝合金钢瓶，40升碳钢瓶包装，可根据用户需要配制不同浓度。)