F series of FEPA - Standard 42-GB-1984
| Grits | Sieve1 | Sieve2 | Sieve3 | Sieve3+4 | S5/Pan | MI ( % ) | Transmittance |
| CG # | Mesh | Max. | Mesh | Min. | Mesh | Min. | 3%max | Max | Min |
| 24 | 16 | 20 | 25% | 25 | 45% | 30 | 65% | 35 | 0.03 | 45 |
| 30 | 18 | 25 | 25% | 30 | 45% | 35 | 65% | 40 | 0.03 | 45 |
| 36 | 20 | 30 | 25% | 35 | 45% | 40 | 65% | 45 | 0.03 | 45 |
| 46 | 30 | 40 | 30% | 45 | 40% | 50 | 65% | 60 | 0.03 | 45 |
| 54 | 35 | 45 | 30% | 50 | 40% | 60 | 65% | 70 | 0.03 | 45 |
| 60 | 40 | 50 | 30% | 60 | 40% | 70 | 65% | 80 | 0.03 | 45 |
| 70 | 45 | 60 | 25% | 70 | 40% | 80 | 65% | 100 | 0.03 | 45 |
| 80 | 50 | 70 | 25% | 80 | 40% | 100 | 65% | 120 | 0.02 | 40 |
| 90 | 60 | 80 | 20% | 100 | 40% | 120 | 65% | 140 | 0.02 | 40 |
| 100 | 70 | 100 | 20% | 120 | 40% | 140 | 65% | 200 | 0.02 | 35 |
| 120 | 80 | 120 | 20% | 140 | 40% | 170 | 65% | 230 | 0.02 | 35 |
| 150 | 100 | 140 | 20% | 200 | 40% | 230 | 65% | 325 | 0.02 | 30 |
| 180 | 120 | 170 | 15% | 230 | 40% | 270 | 65% |
| 0.02 | 30 |
| 220 | 140 | 200 | 15% | 270 | 40% | 325 | 60% |
| 0.02 | 30 |
