Grade | Nominal Rating(µm) | herzerg(s) | air speed(s/100min) | Thickness (µm) | Weight(g/㎡) |
GF/A | 1.6 | 62 | 4.3 | 260 | 53 |
GF/B | 1.0 | 195 | 12 | 675 | 143 |
GF/C | 1.2 | 100 | 6.7 | 260 | 53 |
GF/D | 2.7 | 41 | 2.2 | 675 | 121 |
GF/F | 0.7 | 325 | 19 | 420 | 75 |
GF10 | -- | -- | -- | 350 | 70 |