ISO 7971-2:2019
谷物.称为每百升质量的堆积密度的测定.第2部分:通过参考国际标准仪器测量仪器的可追溯性方法

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

标准号

ISO 7971-2:2019

发布

2019年

发布单位

国际标准化组织

当前最新

ISO 7971-2:2019

 

 

引用标准

ISO 712 ISO 7971-1:2009

适用范围

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.

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