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什么是ISO8573.1質量的等級

質量等級   固態污染物（顆粒尺寸較大微米數）μm   較大壓力露點℃   較高油分含量（油滴、油霧、油氣）ppm w/w ［［［［［     {

1                    0.1                                                                   -70                                       0.008     0.01

2                     1                                                                      -40                                       008         0.1

3                      5                                                                      -20                                      0.8             1

4                    15                                                                       3                                         4                 5

5                     40                                                                        7                                       21             25

6                      -                                                                         10                                          -                    -