ふるい分けと分級 粒度分布は試料の物理的・化学的特性に大きな影響を与えます。したがって、粉体試料の粒度分布を知ることは、品質管理のなかでも重要な要素です。粒度分布が、いかに製品の品質に影響するかは、次の例でも明らかです。
Particle analysis of large quantities of bulk goods is usually done by vibratory sieving. In most vibratory sieve shakers in the market the sieve stack is mounted on springs which oscillate vertically. However, to evenly distribute the material over the entire sieve surface, the so called 3D vibratory sieving as it is used in the AS 450 control is the most suitable method.