ISO 7971-2:2009 谷物 "每百升质量"体积密度的测定 第2部分：通过参考国际标准仪器来测量仪器的可追溯方法

标准编号：ISO 7971-2:2009

中文名称：谷物 "每百升质量"体积密度的测定 第2部分：通过参考国际标准仪器来测量仪器的可追溯方法

英文名称：Cereals — Determination of bulk density, called mass per hectolitre — Part 2: Method of traceability for measuring instruments through reference to the international standard instrument

发布日期：2009-08

标准范围

ISO 7971-2:2009规定了通过参考标准测量仪器确保每百升测量仪器质量可追溯性的试验方法。每百升的质量或体积密度对谷物具有商业重要性。有几种不同性能的仪器用于测量它。ISO 7971-2:2009还规定了实验室或收集或储存筒仓中使用的国家标准仪器、二级标准仪器和测量仪器的性能要求。

ISO 7971-2:2009 specifies a test method for ensuring the traceability of mass per hectolitre measuring instruments through reference to standard measurement instruments. The mass per hectolitre or bulk density is of commercial importance for grain cereals. Several types of instruments with varying performances exist for measuring it.ISO 7971-2:2009 also specifies the performances required of national standards instruments, secondary standards instruments, and measuring instruments used in laboratories or in collection or storage silos.

标准预览图