瑞典Atlas Copco濾芯：
阿特拉斯柯普科濾芯
過濾精度DD(1微米)  DDP(1微米)  PD(0.01)  QD(0.01)
型號：新款                   舊款
        9      0.8m3           6      0.5m3  
        17     1.0             13     1.0
        32     2.0        25     1.8
        44     2.6             40     3.6
        60     3.6             65     8.5
        120    7.2             80     8.5
        ...                    ...
        780    46.8            500    37