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ISO 9509:1989

Water quality — Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste waters

Oct 12, 1989
95.99 Withdrawal of Standard   Jun 23, 2006

General information

95.99     Jun 23, 2006

ISO

ISO/TC 147/SC 5

International Standard

13.060.70  

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WITHDRAWN
ISO 9509:1989
95.99 Withdrawal of Standard
Jun 23, 2006

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ISO 9509:2006