ISO-9888 Complete Document History
Water quality -- Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium -- Static test (Zahn-Wellens method)

Complete Current Edition:
   2ND EDITION - AQUEOUS MEDIUM - STATIC TEST ( - June 1, 1999

Obsolete Revision Information:
   1ST EDITION - WATER QUALITY - EVALUATION OF - Oct. 15, 1991