The measurement is done on the powdered material after settling (settling is accelerated in the test procedure). See ASTM C-29
Use the same procedure as the g/cc bulk density test, however multiply answer by 62.42 to get lbs/cubic foot.
|Tests||Density, loose packed (lbs/cu fut)|
|Tests||Bulk Density g/cc (Packed)|
|Tests||Density (Specific Gravity)|