本文件规定了一种通过参考标准测量仪器来确保体积密度可追溯性的测试方法，称为“每公顷质量”。每公顷的质量对谷物具有重要的商业价值。测量它的几种类型的仪器存在不同的性能。本文件还规定了国家标准仪器、二级标准仪器和实验室或收集或储存筒仓中使用的测量仪器的性能要求。

This document specifies a test method for ensuring the traceability of bulk density, called "mass per hectolitre", measuring instruments through reference to standard measurement instruments. The mass per hectolitre is of commercial importance for grain cereals. Several types of instruments with varying performances exist for measuring it. This document also specifies the performances required of national standards instruments, secondary standards instruments, and measuring instruments used in laboratories or in collection or storage silos.