I. Conversion relationship between mesh and micron.

Mesh and micron are both units used to represent particle size. Mesh refers to the number of holes per square inch, while micron is a unit of length. The conversion relationship between the two is not fixed but depends on the type and standard of the screen. The commonly used Tyler system takes the number of holes per inch as the screen number, called mesh. For example, 100 mesh means there are 100 sieve holes on each inch of the sieve.

II. Conversion formula between mesh and micron.

Generally speaking, mesh × pore size (micron number) ≈15000. The smaller this value is, the larger the pore size of the screen. Correspondingly, the larger the particles that can pass through this screen.

III. Comparison table of mesh and micron.

The following are some common comparison values of mesh and micron:

Due to the problem of opening rate, that is, because the thickness of the wire used in woven mesh is different, the standards of different countries are also different. At present, there are multiple standards such as American standards, British standards, and Japanese standards. Among them, the British and American standards are similar, while the Japanese standard is quite different.