Principles of operation: Samples (either ribbons or tablets) are scanned between dual opposed laser beams by a computer-controlled translation stage in order to quickly (≈ 2 minutes) determine the sample volume, and then transferred to an internal Mettler balance to determine the sample mass.  Together with the operator entered true density of the powder, the solid fraction is automatically calculated and displayed on the touch screen display

To see this instrument in operation,
including the automated,
multiple sample measurement capability,
view the short video below