DIN 38409-41:1980
德國對水、廢水和污泥的標準檢驗法.總的作用參數和材料特性參數(H組).在15毫克/升以上范圍內化學需氧量的測定(COD)(H41)
German Standard Methods for Examination of Water, Waste Water and Sludge; Summary Action and Material Characteristic Parameters (Group H); Determination of the Chemical Oxygen Demand (COD) in the Range over 15 mg/l (H41)