Half mask type respirators which feature a twin filter cartridge with large area and capacity to provide for low breathing resistance and long life. Not for use in atmospheres containing less than 19.5% oxygen.
半面罩式呼吸器,采用双滤芯,面积大,容量大,呼吸阻力小,使用寿命长。不能在含氧量低于19.5%的大气中使用。