Table of content

## The number of openings is determined by mesh count and the opening size is determined by the micron rating.

Mesh count vs micron rating

Mesh to micron conversion does not have a standard formula, however we can roughly convert by multiplying 14900 by the specified mesh size (micron = 14900/mesh).

### The mesh opening profile will normally be defined as a mesh count when the openings are measured in inches or millimetres.

Particle size conversion table
U.S. MESH MILLIMETERS INCHES
4 4.76 0.187
3 6.73 0.265
5 4 0.157
7 2.83 0.111
6 3.36 0.132
8 2.38 0.0937
12 1.68 0.0661
10 2 0.0787
16 1.19 0.0469
14 1.41 0.0555
18 1 0.0394
25 0.707 0.028
20 0.841 0.0331
35 0.5 0.0197
30 0.595 0.0232
40 0.4 0.0165
50 0.297 0.0117
60 0.25 0.0098
45 0.354 0.0138
70 0.21 0.0083
100 0.149 0.0059
80 0.177 0.007
120 0.125 0.0049
170 0.088 0.0035
140 0.105 0.0041
230 0.063 0.0024
200 0.074 0.0029
325 0.044 0.0017
270 0.053 0.0021
400 0.037 0.0015

#### The measurement is changed to microns once the opening dimensions are less than one millimetre.

Mesh to micron conversion chart
U.S. MESH MICRONS
4 4760
3 6730
5 4000
7 2830
6 3360
8 2380
12 1680
10 2000
16 1190
14 1410
18 1000
25 707
20 841
35 500
30 595
40 400
50 297
60 250
45 354
70 210
100 149
80 177
120 125
170 88
140 105
230 63
200 74
325 44
270 53
400 37
##### The openings of coarser weaves, which are frequently square meshes, are described by mesh count.
How mesh count is described ?

The number of holes in a filter per unit area is called the mesh size. One square inch is the standard area in the United States.

For example,

Consider a piece of wire mesh that is marked as 50 mesh. This indicates that if you were to count the openings in the mesh, there would be 50 in both the horizontal and vertical directions.

In what ways does the number of meshes impact wire mesh performance?

Mesh count regulates the maximum flow velocity that the mesh allows since it shows how many apertures there are in a particular weave.

Inadequate mesh implementation can lead to excessive pressure formation in the structure, which can raise stress and promote wear and tear.

###### The openings of a finer weave, usually filter cloth, are described by a micron rating
How micron rating is described ?

Wire mesh apertures less than one millimetre are designated by a micron rating. It is the exact separation of any opening’s wires from one another.

As a result, what may and cannot pass through woven wire mesh is closely correlated with its micron rating.

How does wire mesh performance change with micron rating?

The size of a hole can be described by its micron rating, which also defines the spacing between its wires. This indicates that what may and cannot pass through woven wire mesh is closely correlated with the mesh’s micron rating.

The possibility of undesired particles getting through the mesh increases when a micron value is used that is too high. Utilising a micron rating that is too small raises the possibility of blinding