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     从结构材质上来区分的话，原子吸收罩一般用不锈钢材质。万向吸收罩一般采用**高密度PP材料，具有高机械强度，耐有机化工试剂腐蚀等优点。而且原子吸收罩和万向吸收罩已经通风柜等实验室排风设备的风机都是实验室专用防爆风机，这种风机的好处是能防止因为风机转动产生的火花引爆可燃溶剂，而引起不必要的安全事故，给实验室实验台工作人员带去伤害。

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