How to measure the diameter of a hair

How to measure the diameter of a hair

Method 1: wrap the hair around the pencil. Then measure the diameter of several turns of hair and divide by the number of turns
Method 2 can wrap the hair n circles on the pencil, measure their total diameter with common instruments, and then divide n, which is relatively simple and accurate. The larger the N, the more accurate

How many meshes can 100-200 microns be converted into?

The specific conversion is as follows: unit of measurement mesh size refers to the size of raw material particles, generally expressed by the maximum length of the particles. Mesh is the size of the sieve hole size of the standard sieve. In Taylor standard sieve, the so-called mesh is the number of sieve holes in the length of 2.54 cm (1 inch), also referred to as mesh

I would like to ask you a more urgent question about the conversion between mesh and micron
There is a customer's requirement that the particle standard is: passing 45 μ m min 78%; retained 150 μ m Max 0.25%. How much should be changed into the target?

Comparison table of meter and mesh 1 micron -- 12500 mesh 1.3 micron -- 8000 mesh 2 micron -- 6250 mesh 2.6 micron -- 5000 mesh 5 micron -- 2500 mesh 6.5 micron -- 2000 mesh 10 micron -- 1250 mesh 15 micron -- 800 mesh 20 micron -- 625