DIN EN ISO 11734:1998 水質(zhì).消化污泥中有機化合物最終厭氧生物降解能力評定方法
Water quality - Evaluation of the "ultimate" anaerobic biodegradability of organic compounds in digested sludge - Method by measurement of the biogas production (ISO 11734:1995); German version EN ISO 11734:1998