GB/T 19421.4-2003
Layered crystalline sodium disilicate test method — Determination of calcium exchange capacity by EDTA volumetric method
层状结晶二硅酸钠试验方法 EDTA容量法测定钙交换能力
📚 References & Relations / 引用与关联
normative_reference
GB/T 19421
normative_reference
GB/T 601-2002