Particle-size analysis results for a variety of natural and man-made materials used to assess the precision and accuracy of laboratory laser-diffraction particle-size analysis of fluvial sediment

The dataset documents results from testing of 1) vendor-supplied reference materials 2) NIST-traceable polysidperse glass bead reference materials 3) mixtures of commercially-available glass beads 4) mixtures of internal reference materials prepared from geologic material