Mesh Sizing Chart

Mesh size for strainers is usually denominated in mm or microns however it can also be assigned a mesh number (which is number of holes per inch). A micron is one millionth of a meter. There are some basic references of size of mesh but vary according to such things as heat, pressure and the nature of the material. A quick guide is below.

Mesh Number Microns Material
28 700 Course Sand
60 250 Fine Sand
325 44 Silt
400 37 Pollen
12000 12 Red Blood Cells
48000 2 Cigarette Smoke

 

Mesh Size Comparison Chart

Mesh Number Inches Microns Millimetres
3 0.265 6730 6.73
4 0.187 4760 4.76
5 0.157 4000 4
6 0.132 3360 3.36
7 0.111 2830 2.83
8 0.0937 2380 2.38
10 0.0787 2000 2
12 0.0661 1680 1.68
14 0.0555 1410 1.41
16 0.0469 1190 1.19
18 0.0394 1000 1
20 0.0331 841 0.841
25 0.028 707 0.707
30 0.0232 595 0.595
35 0.0197 500 0.5
40 0.0165 400 0.4
45 0.0138 354 0.354
50 0.0117 297 0.297
60 0.0098 250 0.25
70 0.0083 210 0.21
80 0.007 177 0.177
100 0.0059 149 0.149
120 0.0049 125 0.125
140 0.0041 105 0.105
170 0.0035 88 0.088
200 0.0029 74 0.074
230 0.0024 63 0.063
270 0.0021 53 0.053
325 0.0017 44 0.044
400 0.0015 37 0.037