Filter specification question

The mesh number refers to the number of holes within one inch square (length 25.4mm, width 25.4mm). There is also a special mesh number conversion table.

Mesh number comparison mesh size um mesh size um mesh size um 5 3900 140 104 1600 10 10 2000 170 89 1800 8 16 1190 200 74 2000 6.5 20 840 230 61 2500 5.5 25 710 270 53 3000 5 30 590 325 44 3500 4.5 35 500 400 38 4000 3.4 40 420 460 30 5000 2.7 45 350 540 26 6000 2.5 50 297 650 21 7000 1.25 60 250 800 19 80 178 900 15 100 150 1100 13 120 124 1300 11 　

“The definition of "object" is: The number of mesh openings per inch of length (not per square inch). This is actually a loose definition. The reason why it is said to be loose is that the thickness of the mesh is not involved in this definition. Therefore, it is not possible to accurately convert "mesh" into the length of the mesh side in mm. However, in different * * Different standard systems stipulate the mesh number corresponding to the average particle size of particles. For example, the commonly used conversions in my country are as follows: Mesh Number Micron Mesh Number Micron Mesh Number Micron Mesh Number Micron 2.5 7925 12 1397 60 245 325 47 3 5880 14 1165 65 220 425 33 4 4599 16 991 80 198 500 25 5 3962 20 833 100 165 625 20 6 3327 24 701 110 150 800 15 7 2794 27 589 180 83 1250 10 8 2362 32 495 200 74 2500 5 9 1981 35 417 250 61 3250 2 10 1651 40 350 270 53 12500 The relationship between micrometers (μm) and mesh number The relationship between micrometers (μm) and mesh number This article comes from: Boyan Alliance Forum This article comes from: Boyan Alliance Forum This article comes from: Boyan Alliance Forum Many powders are expressed in terms of mesh number, but they need to be converted into microns in the experimental report. See this relationship and see if it is useful to everyone. This article comes from: Boyan Alliance Forum This article comes from: Boyan Alliance Forum The particle size of particles can usually be expressed in microns (μm) or the mesh size of a sieve. The relationship between micrometers (μm) and corresponding mesh numbers is shown in the table below. This article comes from: Boyan Alliance Forum This article comes from: Boyan Alliance Forum Particle size/μm 833 175 147 104 74 43 38 20 10 5 1 This article comes from: Boyan Alliance Forum Mesh number 20 80 100 150 200 325 400 625 1250 2500 12500 This article comes from: Boyan Alliance Forum This article comes from: Boyan Alliance Forum There is another simple rule: if it is higher than 500 mesh, the mesh number times the particle size is equal to 12500. If it is less than 500 mesh, the mesh number times the particle size is equal to 15500. This article comes from: Boyan Alliance Forum It is not very accurate, but it is easier to remember, and you can estimate it at any time when you encounter it. The size of powder particles is called particle size. Because the particle shape is very complex, there are usually several expression methods such as screening particle size, sedimentation particle size, equivalent volume particle size, and equivalent surface area particle size. The screening particle size is the size of the sieve holes that the particles can pass through, expressed as the number of sieve holes in a 1-inch (25.4mm) wide sieve, so it is called the "mesh number." At present, there is no unified technical standard for powder particle size at home and abroad. Each enterprise has its own definition and expression method of particle size index. in different * * , Different industries have different standards for screen mesh specifications, so the meaning of "mesh" is difficult to unify. 

Filter refers to the name of the device, and mesh refers to the number of holes in one inch of the filter media. There is a conversion table for mesh size and accuracy.

There should be no specific conversion relationship between the mesh and the number of holes, as long as you can check it when using it.

The more I look at the moon, the more confused I am: funk:

I have a mesh size and um conversion table here. If anyone needs it, you can leave a message via email and I will send it to your email.