Cereals - Determination of bulk density, called mass per hectolitre - Part 1: Reference method (ISO 7971-1:2009); German version EN ISO 7971-1:2009— 14 стр.
Cereals - Determination of bulk density, called mass per hectolitre - Part 3: Routine method (ISO 7971-3:2019); German version EN ISO 7971-3:2019— 25 стр.