Webstore

RS ISO 5815-2: 2003
Water quality — Determination of Biochemical Oxygen Demand after n-days (BODn) — Part 2: Methods for undiluted samples

Abstract

This part of ISO 5815 specifies determination of the biochemical oxygen demand (BOD) of waters of undiluted
samples. It is applicable to all waters having biochemical oxygen demands greater than or equal to 0,5 mg/l of
oxygen (the limit of determination) and not exceeding 6 mg/l of oxygen.
The results obtained are the product of a combination of biochemical and chemical reactions. They do not have
the rigorous and unambiguous character of those resulting from, for example, a single, well-defined, chemical
process. Nevertheless, they provide an indication from which the quality of waters can be estimated.
The test can be influenced by the presence of various substances. Those which are toxic to microorganisms, for
example bactericides, toxic metals or free chlorine, inhibit biochemical oxidation. The presence of algae or
nitrifying microorganisms can produce artificially high results. In these situations a modification of the method
may be necessary.

General Information

Code	Classification	Theme	Pages	Publisher	Availability
RS ISO 5815-2: 2003	ADOPTED ISO STANDARDS	Environment. Health protection. Safety	21	First Edition Apr 2020	Available