Registration number (WIID)Project No.TitleStatus
17142ISO 9439:1990Water quality — Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds — Method by analysis of released carbon dioxideAtcelts
21002ISO 9439:1990/Cor 1:1992Water quality — Evaluation in an aqueous medium of the "ultimate" aerobic biodegradability of organic compounds — Method by analysis of released carbon dioxide — Technical Corrigendum 1Atcelts
26727ISO 9439:1999Water quality — Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium — Carbon dioxide evolution testStandarts spēkā
26727ISO 9439:1999Water quality Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium Carbon dioxide evolution testAtcelts
17241ISO 9509:1989Water quality Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste watersAtcelts
17241ISO 9509:1989Water quality — Method for assessing the inhibition of nitrification of activated sludge micro-organisms by chemicals and waste watersAtcelts
34812ISO 9509:2006Water quality — Toxicity test for assessing the inhibition of nitrification of activated sludge microorganismsAtcelts
17768ISO 9887:1992Water quality — Evaluation of the aerobic biodegradability of organic compounds in an aqueous medium — Semi-continuous activated sludge method (SCAS)Standarts spēkā
17769ISO 9888:1991Water quality — Evaluation of the aerobic biodegradability of organic compounds in an aqueous medium — Static test (Zahn-Wellens method)Atcelts
28121ISO 9888:1999Water quality — Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium — Static test (Zahn-Wellens method)Standarts spēkā
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