Micron grade
The fineness of a micron screen, which is a mesh screen used to make hash. The higher the number, the finer the mesh, and common micron screens for making hash are 73, 90, and 140 microns.
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The fineness of a micron screen, which is a mesh screen used to make hash. The higher the number, the finer the mesh, and common micron screens for making hash are 73, 90, and 140 microns.