测定自由流动体积密度的方法包括从指定漏斗将样品倒入已知体积的指定容器中，并称量容器中的内容物。压实体积密度的测定包括在慢跑式体积计中测定固定数量的抽头（通常为100次）后给定质量产品的体积。

The method for the determination of the free-flow bulk density consists in pouring a sample from a specified funnel into a specified receptacle of known volume, and weighing the contents of the receptacle. The determination of the compacted bulk density consists in determining of the volume of a given mass of the product after a fixed number of taps (usually 100) in a jogging volumeter.