What’s a micron? A micron is another measurement we use for measuring particle size. A micron is one-millionth of a meter or one twenty-five thousandth of an inch.
What does mesh size mean? Figuring out mesh size is simple. All you do is count the number of opening in one inch of screen (in the United States, anyway.) The number of openings is the mesh size. So a 4 mesh screen means there are flour little squares across one linear inch of screen. A 100 mesh screen has 100 openings, and so on.