Sandblasting Grit Size, Microns, Mesh, Inches Conversion Chart
· Grit is sized by passing it through a series of mesh sieves. Essentially, the Grit Size is determined by how much grit passes through or is retained at certain sieve sizes. The Certified or Inspection Test Sieves each have a number corresponding to a size in the United States Standard Sieve Series (aka USS), with screen openings specified by the American Society for .