TCVN 6621-2000 Water quality.Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds.Method by analysis of dissolved organic cacbon (DOC)
2008TCVN 6621-2000 Water quality.Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds.Method by analysis of dissolved organic cacbon (DOC)