ISO 11508:2017规定了根据土壤颗粒的质量和体积计算土壤颗粒密度的两种方法。 第一种方法（4.1）适用于细土（<；2mm直径），第二种方法（4.2）适用于多孔和无孔砾石和石头（>；2mm直径）。 结合ISO 11272中给出的程序，颗粒密度可用于计算固体比例和土层孔隙度。

ISO 11508:2017 specifies two methods for the determination of particle density of soils calculated from the mass and the volume of soil particles. The first method (4.1) is applicable to fine soil (<2 mm diameter) and the second method (4.2) is applicable to both porous and nonporous gravel and stones (>2 mm diameter). The particle density can be used for the calculation of the proportion of solids and of the porosity of soil layers in combination with the procedure given in ISO 11272.