UNE-EN ISO 9887:1995 WATER QUALITY. EVALUATION OF THE AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM. SEMI-CONTINUOUS ACTIVATED SLUDGE METHOD (SCAS). (ISO 9887:1992).
1995UNE-EN ISO 9887:1995 WATER QUALITY. EVALUATION OF THE AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AN AQUEOUS MEDIUM. SEMI-CONTINUOUS ACTIVATED SLUDGE METHOD (SCAS). (ISO 9887:1992).