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EN ISO 7827:2012

Water quality - Evaluation of the "ready", "ultimate" aerobic biodegradability of organic compounds in an aqueous medium - Method by analysis of dissolved organic carbon (DOC) (ISO 7827:2010)

Publication date:   Feb 15, 2013

General information

60.60 Standard published   Dec 19, 2012

CEN

CEN/TC 230 Water analysis

European Norm

13.060.70   Examination of biological properties of water

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Scope

ISO 7827:2010 specifies a method for the evaluation of the “ready” and “ultimate” biodegradability of organic compounds at a given range of concentrations by aerobic microorganisms. In this context, ISO 7827:2010 also gives specific definitions for the terms “ready” and “ultimate”.
The method applies to organic compounds which are: a) soluble at the concentration used under the conditions of the test [dissolved organic carbon (DOC) concentrations of 10 mg/l to 40 mg/l]; b) non‑volatile or having a negligible vapour pressure under the conditions of the test; c) not significantly adsorbable on glass and activated sludge; d) not inhibitory to the test microorganisms at the concentration chosen for the test.
The method is not suitable for waste waters, as they usually contain significant amounts of water‑insoluble organic carbon, which is not included in DOC measurements.

Life cycle

PREVIOUSLY

Replaces
EN ISO 7827:1995

NOW

PUBLISHED
EN ISO 7827:2012
60.60 Standard published
Dec 19, 2012

Relations

Adopted from ISO 7827:2010 IDENTICAL