什么是ISO8573.1质量的等级

质量等级   固态污染物（颗粒尺寸较大微米数）μm   较大压力露点℃   较高油分含量（油滴、油雾、油气）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                                          -                    -