The chart below details the equivalents to convert from mesh to micron or vice versa. These measurements indicate the mesh or pore openings in your filter bag material . 1.6, 2.2, Flour Mill Dust. 3, 4, Cement Dust. 4, 5.5, Pulverized .. So a 4 mesh screen means there are four little squares across one linear inch of screen.
Mesh vs. Micron Comparison Chart. Mesh. Microns. Inches. Millimeters. Netafim Disk . Talcum Powder / Level to Remove Haze from Liquid / Fertilizer (10 . An 80 mesh screen means there are 80 openings across one linear inch of screen.