Sand content:

The insoluble abrasive solids content of a drilling fluid rejected by a 200-mesh screen.

Usually expressed as the percentage bulk volume of sand in a drilling fluid.

This test is an elementary type in that the retained solids are not necessarily silica and may not be altogether abrasive.

For additional information concerning the kids of solids retained on the 200-mesh screen, more specific tests would be required.

See mesh.