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ISO 5815-1:2003

Withdrawn
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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Water quality Determination of biochemical oxygen demand after n days (BODn) Part 1: Dilution and seeding method with allylthiourea addition
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

07-01-2019

Language(s)

English, French

Published date

03-31-2003

ISO 5815-1:2003 specifies a determination of the biochemical oxygen demand of waters by dilution and seeding with suppression of nitrification.

ISO 5815-1:2003 is applicable to all waters having biochemical oxygen demands greater than or equal to 3 mg/l of oxygen (the limit of determination) and not exceeding 6 000 mg/l of oxygen. For biochemical oxygen demands greater than 6 000 mg/l of oxygen, the method is still applicable, but the errors caused by the necessary dilutions can influence the analytical quality of the test method and the results are to be interpreted with circumspection.

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, will inhibit biochemical oxidation. The presence of algae or nitrifying microorganisms can produce artificially high results.

Annex A describes alternative incubation periods.

Annex B describes multitesting, which can be used to obtain enhanced precision or to demonstrate the presence of substances toxic to microorganisms.

Annex C provides precision data.

DevelopmentNote
Together with ISO 5815-2, supersedes ISO 5815. (04/2003) DRAFT ISO/DIS 5815-1 is also available for this standard. (09/2017)
DocumentType
Standard
Pages
15
PublisherName
International Organization for Standardization
Status
Withdrawn
SupersededBy
Supersedes

Standards Relationship
EN 1899-1 : 1998 Identical
DIN EN 1899-1:1998-05 Identical
SANS 738-1 : 1ED 2008(R2013) Identical
DIN EN 1899-1 E : 1998 Identical
SANS 738-1:2008(R2019) Identical

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ISO 8467:1993 Water quality Determination of permanganate index
ISO 5813:1983 Water quality — Determination of dissolved oxygen — Iodometric method
ISO 9408:1999 Water quality — Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium by determination of oxygen demand in a closed respirometer
ISO 8245:1999 Water quality Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
ISO 6060:1989 Water quality — Determination of the chemical oxygen demand
ISO 5814:1990 Water quality Determination of dissolved oxygen Electrochemical probe method
ISO 6107-2:2006 Water quality Vocabulary Part 2:
ISO 3696:1987 Water for analytical laboratory use — Specification and test methods
ISO 7393-2:1985 Water quality Determination of free chlorine and total chlorine Part 2: Colorimetric method using N,N-diethyl-1,4-phenylenediamine, for routine control purposes

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