Particle size specification from electroformed sieve
Grit size | 99.9% through sieve, µm | Higher control sieve | Smaller control sieve | Highest 2% through sieve, µm | |||||||||
Mesh | µm | Sieve, µm | Pass % | Sieve, µm | Pass,% | Not passed, µm | |||||||
16 x 18 | 1180 x 1000 | 1700 | 1180 | – | 1000 | – | – | 710 | |||||
18 x 20 | 1000 x 850 | 1400 | 1000 | – | 850 | – | – | 600 | |||||
20 x 25 | 850 x710 | 1180 | 850 | – | 710 | – | – | 500 | |||||
25 x 30 | 710 x 600 | 1000 | 710 | — | 600 | – | – | 425 | |||||
30 x 35 | 600 x 500 | 850 | 600 | – | 500 | – | – | 355 | |||||
35 x 40 | 500 x 425 | 710 | 500 | 8 | 425 | 90 | 8 | 300 | |||||
40 x 45 | 425 x 355 | 600 | 455 | – | 360 | – | – | 255 | |||||
45 x 50 | 355 x 300 | 500 | 384 | – | 302 | – | – | 213 | |||||
50 x 60 | 300 x 250 | 455 | 322 | – | 255 | – | – | 181 | |||||
60 x 70 | 250 x 212 | 384 | 271 | – | 213 | – | – | 151 | |||||
70 x 80 | 212 x 180 | 322 | 227 | – | 181 | – | – | 127 | |||||
80 x 100 | 180 x 150 | 271 | 197 | – | 151 | – | – | 107 | |||||
100 x 120 | 150 x 125 | 227 | 165 | 10 | 127 | 87 | 10 | 90 | |||||
120 x 140 | 125 x 106 | 197 | 139 | – | 107 | – | – | 75 | |||||
140 x 170 | 106 x 90 | 165 | 116 | – | 90 | – | – | 65 | |||||
170 x 200 | 90 x 75 | 139 | 97 | 11 | 75 | 85 | 11 | 57 | |||||
200 x 230 | 75 x 63 | 116 | 85 | – | 65 | – | – | 49 | |||||
230 x 270 | 63 x 53 | 97 | 75 | – | 57 | – | – | 41 | |||||
270 x 325 | 53 x 45 | 85 | 65 | – | 49 | – | – | – | |||||
325 x 400 | 45 x 38 | 75 | 57 | 15 | 41 | 80 | 15 | – | |||||
Wide range grit specification | |||||||||||||
16 x 20 | 1180 x 850 | 1700 | 1180 | – | 850 | – | – | 600 | |||||
20 x 30 | 850 x 600 | 1800 | 850 | – | 600 | – | – | 425 | |||||
30 x 40 | 600 x 425 | 850 | 600 | 8 | 425 | 90 | 8 | 300 | |||||
40 x 50 | 425 x 300 | 600 | 455 | – | 302 | – | – | 213 | |||||
60 x 80 | 250 x 180 | 384 | 271 | – | 181 | – | – | 127 | |||||
ISO size design | Mesh size | Weight for | 99.9 % pass through | Higher control sieve | Highest sieve % | Lower control sieve | Min. on sieve | Max. on sieve | 0.5 % max through | |
200 mm sieves | 75 mm sieves | Sieve, µm | Sieve, µm | Sieve, µm | % | % | Sieve, µm | |||
Narrow wide range | ||||||||||
1181 | 16 x 18 | – | – | 1830 | 1280 | – | 1010 | – | – | 710 |
1001 | 18 x 20 | – | – | 1530 | 1080 | – | 840 | – | – | 600 |
851 | 20 x25 | – | – | 1280 | 915 | – | 710 | – | – | 505 |
711 | 25 x 30 | – | – | 1080 | 770 | – | 600 | – | – | 425 |
601 | 30 x 35 | – | – | 915 | 645 | – | 505 | – | – | 360 |
501 | 35 x 40 | 80 to 120 | 9.6 to 14.5 | 770 | 541 | 5 | 425 | 93 | 5 | 302 |
426 | 40 x 45 | – | – | 645 | 455 | – | 360 | – | – | 255 |
356 | 45 x 50 | – | – | 541 | 384 | – | 302 | – | – | 213 |
301 | 50 x 60 | – | – | 455 | 322 | – | 255 | – | – | 181 |
251 | 60 x 70 | – | – | 384 | 271 | – | 213 | – | – | 151 |
213 | 70 x 80 | – | — | 322 | 227 | – | 181 | – | – | 127 |
181 | 80 x 100 | – | – | 271 | 197 | – | 151 | – | – | 107 |
151 | 100 x 120 | – | – | 227 | 165 | 7 | 127 | 90 | 7 | 90 |
126 | 120 x 140 | 40 to 60 | 4.8 to 7.2 | 197 | 139 | – | 107 | – | – | 75 |
107 | 140 x 170 | – | – | 165 | 116 | – | 90 | – | – | 65 |
91 | 170 x 200 | – | – | 139 | 97 | 8 | 75 | 88 | 8 | 57 |
76 | 200 x 230 | – | – | 116 | 85 | – | 65 | – | – | 49 |
64 | 230 x 270 | – | – | 97 | 75 | – | 57 | – | – | 41 |
54 | 270 x 325 | 20 to 30 | 2.4 to 3.6 | 85 | 65 | 12 | 49 | 83 | 12 | 37 |
46 | 325 x 400 | – | – | 75 | 57 | – | 41 | – | – | 32 |