确定流量堆积密度的原理包括通过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。为了确定压实体积密度，应在分接体积计中进行固定数量的分接（通常为300次）后，测量给定质量产品的体积。三幅图显示了合适的仪器。

The principle of the determination of the fee-flow bulk density consists in pouring a sample through a specified funnel into a specified receptacle of known volume and weighing the contents of the receptacle. In order to determine the compacted bulk density a volume of a given mass of the product shall be measured after a fixed number of taps (usually 300) in a tapping volumeter. Three figures show suitable apparatus.