WATER QUALITY. EVALUATION OF ULTIMATE AEROBIC BIODEGRADABILITY OF ORGANIC COMPOUNDS IN AQUEOUS MEDIUM. STATIC TEST (ZAHN-WELLENS METHOD). (ISO 9888:1999).

Available format(s)

Hardcopy , PDF

Language(s)

Spanish, Castilian, English

Published date

27-10-1999

Publisher

Asociacion Espanola de Normalizacion

1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test environment
6 Reagents
7 Apparatus
8 Procedure
9 Calculation and expression of results
10 Validity of results
11 Test report
Annex A (informative) Example of a biodegradation
curve
Bibliography

Defines a procedure for the evaluation in aqueous medium of the ultimate biodegradability and as information, the primary biodegradability and the total elimination from water, of organic compounds at a specified concentration by aerobic microorganisms. The procedure is applicable to organic compounds which are water-soluble at the concentration used under the test conditions and not expected to be transformed to insoluble metabolites if biodegradation; nonvolatile, or which have negligible vapour pressure under test conditions; not lost by foaming from the test solution and not inhibitory to the microorganisms at the concentration chosen for the test.

Committee	CTN 77/SC 1
DevelopmentNote	Supersedes UNE EN 29888. (07/2003)
DocumentType	Standard
Pages	18
PublisherName	Asociacion Espanola de Normalizacion
Status	Current
Supersedes	UNE-EN 29888:1995

Standards	Relationship
ISO 9888:1999	Identical
NBN EN ISO 9888 : 1999	Identical
NEN EN ISO 9888 : 1999	Identical
NS EN ISO 9888 : 2ED 1999	Identical
I.S. EN ISO 9888:1999	Identical
SN EN ISO 9888 : 1999	Identical
UNI EN ISO 9888 : 2000	Identical
BS EN ISO 9888:1999	Identical
EN ISO 9888 : 1999	Identical
NF EN ISO 9888 : 1999	Identical
DIN EN ISO 9888 E : 1999	Identical
DIN EN ISO 9888:1999-11	Identical