ISO 2171:2007规定了一种用于确定谷物，豆类和其用于人类消费的碾磨产品产生的灰分的方法。涵盖的来源材料是:a）谷物谷物; b）面粉和半纤维素; c）碾磨产品（麸皮和高麸皮产品，锐利）; d）混合谷物粉（混合物）; e）碾磨产品以外的谷物副产品;和f）脉冲及其副产物。 ISO 2171:2007不适用于淀粉和淀粉衍生物（见ISO 3593），适用于动物饲料（见ISO 5984）或种子的产品

ISO 2171:2007 specifies a method for determining the ash yielded by cereals, pulses and their milled products intended for human consumption. The source materials covered are: a) grains of cereals; b) flours and semolinas; c) milled products (bran and high bran content products, sharps); d) mixed cereal flours (mixes); e) cereal by-products other than milled products; and f) pulses and their by-products. ISO 2171:2007 is not applicable to starches and starch derivatives (see ISO 3593), to products intended for animal feeding stuffs (see ISO 5984), or to seeds.