This standard specifies the determination method of total calcium, total magnesium and total sulfur in compound fertilizer (compound fertilizer). This standard is applicable to the determination of total calcium, total magnesium and total sulfur in various compound fertilizers (compound fertilizers).
GB/T 19203-2003 history
2003GB/T 19203-2003 Determination of calcium,magnesium and sulphur content for compound fertilizer