ISO 2926:2013规定了一种使用电铸筛的干筛法，用于测定用于生产原铝的氧化铝中粒度的质量分布。 该方法适用于煅烧氧化铝，其中平均直径超过150μm的颗粒质量分数最多为20%，平均直径小于45μm的颗粒质量分数最多为15%。 该方法不适用于使用编织钢丝筛。

ISO 2926:2013 specifies a dry sieve method using electroformed sieves for determining the mass distribution of the particle sizes in aluminium oxide used for the production of primary aluminium. This method is applicable to calcined aluminium oxide containing a maximum of 20 % mass fraction of particles having a mean diameter exceeding 150 μm, and containing a maximum of 15 % mass fraction of particles having a mean diameter less than 45 μm. This method is not applicable to the use of woven wire sieves.