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EN ISO 9509:1995

Water quality - Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste water (ISO 9509:1989)

Publication date:   Mar 19, 2004

General information

99.60 Withdrawal effective   Jul 1, 2006

CEN

CEN/TC 230 Water analysis

European Norm

13.060.30   Sewage water

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Life cycle

NOW

WITHDRAWN
EN ISO 9509:1995
99.60 Withdrawal effective
Jul 1, 2006

REVISED BY

PUBLISHED
EN ISO 9509:2006

Relations

Adopted from ISO 9509:1989 IDENTICAL