-
Mesh Size/Opening Reference Table and Diagram
Mesh Size Sieve Openings [µm] US Grade Market Grade ASTM
E 11-61British Standard
BS 410:196210 2215 1910 2000 1680 12 1890 1520 1680 14 1565 1300 1410 1200 16 1330 1130 1190 1000 18 1135 980 1000 20 970 860 841 24 700 25 815 707 600 30 695 520 595 500 35 585 450 500 40 502 380 420 45 425 354 50 363 280 297 60 306 230 250 250 70 263 200 210 80 227 180 177 100 192 160 149 150 110 129.5 120 163 117 125 125 140 141 107 105 150 104 105 160 96.5 170 122 88.9 88 90 180 83.8 200 103 73.7 74 75 230 89 63 250 61 270 76 53.3 53 325 66 43.2 44 400 57 37 37
-
Mesh/Micrometer Calculator (only defined between 30 - 140 mesh, 75 - 600 µm)
coming soon
-
Expected Flow for Packed Columns
Internal Diameter Mesh Size
Columns shorter
than 3 mMesh Size
Columns longer
than 3 mExpected N2 Flow
[mL/min]Expected H2/He Flow
[mL/min]2 mm 100 - 120 80 - 100 8 - 15 15 - 30 3 mm 100 - 120 80 - 100 15 - 30 30 - 60 4 mm 80 - 100 60 - 80 30 - 60 60 - 100