Please select and order
€109.76
excl. VAT
Add to cart
Norm
ÖNORM EN ISO 14851
Issue date: 2004 10 01
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by measuring the oxygen demand in a closed respirometer (ISO 14851:1999)
This International Standard specifies a method, by measuring the oxygen demand in a closed respirometer, for the determination of the degree of aerobic biodegradability o...
Withdrawn: 2019 06 15
Publisher:
Austrian Standards International
Format:
Digital | 30 Pages
Language:
German
| English
| Download GER/ENG
Currently valid:
Optionally co-design standards:
ICS
This International Standard specifies a method, by measuring the oxygen demand in a closed respirometer, for the determination of the degree of aerobic biodegradability of plastic materials, including those containing formulation additives. The test material is exposed in an aqueous medium under laboratory conditions to an inoculum from
activated sludge, compost or soil. If an unadapted activated sludge is used as the inoculum, the test simulates the biodegradation processes which occur in a natural aqueous environment; if a mixed or pre-exposed inoculum is used, the method can be used to
investigate the potential biodegradability of a test material.
The conditions used in this International Standard do not necessarily correspond to the optimum conditions allowing
maximum biodegradation to occur, but the standard is designed to determine the potential biodegradability of plastic materials or give an indication of their biodegradability in natural environments.
The method enables the assessment of the biodegradability to be improved by calculating a carbon balance (optional, see annex E).
The method applies to the following materials: Natural and/or synthetic polymers, copolymers or mixtures thereof. Plastic materials which contain additives such as plasticizers, colorants or other compounds. Water-soluble polymers. Materials which, under the test conditions, do not inhibit the microorganisms present in the inoculum. Inhibitory effects can be determined using an inhibition control or by another appropriate method (see e.g. ISO 8192[3]). If
the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.
ÖNORM EN ISO 14851
2019 06 15
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - M...
Norm
ÖNORM EN ISO 14851
2004 10 01
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - M...
Norm
↖
Norm
Issue date :
1995 11 01
Water quality - Guidance for the preparation and treatment of poorly water-soluble organic compounds for the subsequent evaluation of their biodegradability in an ....(abbreviated)
Norm
Issue date :
1999 03 04
Water quality — Guidelines for the determination of total organic carbon (TOC) and dissolved organic carbon (DOC)
Norm
Issue date :
1999 07 29
Water quality — Evaluation of ultimate aerobic biodegradability of organic compounds in aqueous medium by determination of oxygen demand in a closed respirometer
Norm
Issue date :
1995 08 17
Water quality — Guidance for the preparation and treatment of poorly water-soluble organic compounds for the subsequent evaluation of their biodegradability in an aqueous medium
Technische Regel
Issue date :
1997 09 25
Water quality — Selection of tests for biodegradability
Norm
Issue date :
2019 06 15
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium - Method by measuring the oxygen demand in a closed respirometer (ISO 14851:2019)
Norm
Issue date :
1999 05 20
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium — Method by measuring the oxygen demand in a closed respirometer (Corrected version 2003-07)