BS EN ISO 14851:2019 Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by measuring the oxygen demand in a closed respirometer

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BS EN ISO 14851:2019

Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by measuring the oxygen demand in a closed respirometer

Status : Current   Published : April 2019

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What is this standard about?

This document 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.

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 is used to investigate the potential biodegradability of a test material.

The conditions used in this document do not necessarily correspond to the optimum conditions allowing maximum biodegradation to occur, but this document 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.

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, for example, ISO 8192). If the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.




Standard NumberBS EN ISO 14851:2019
TitleDetermination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium. Method by measuring the oxygen demand in a closed respirometer
StatusCurrent
Publication Date17 April 2019
Cross ReferencesISO 8245, ISO 9408:1999, ISO 8192, ISO 10708, ISO 10634, ISO 11923, ASTM D 3536-91, JIS K 6950:1994, ISO/TR 15462
ReplacesBS EN ISO 14851:2004
International RelationshipsEN ISO 14851:2019,ISO 14851:2019
Draft Superseded By16/30333274 DC
DescriptorsEquations, Microbiological analysis, Error correction, Biodegradability, Polymers, Additives, Specimen preparation, Biological analysis and testing, Degradation, Testing conditions, Nitrifying bacteria, Gas analysis, Bibliography, Plastics, Test specimens, Oxygen demand, Biological oxygen demand, Carbon dioxide, Test equipment, Aerobic bacteria, Control samples
ICS83.080.01
Title in FrenchÉvaluation de la biodégradabilité aérobie ultime des matériaux plastiques en milieu aqueux. Méthode par détermination de la demande en oxygène dans un respiromètre fermé
Title in GermanBestimmung der vollständigen aeroben Bioabbaubarkeit von Kunststoff-Materialien in einem wässrigen Medium. Verfahren mittels Messung des Sauerstoffbedarfs in einem geschlossenen Respirometer
CommitteePRI/89
ISBN978 0 580 92337 1
PublisherBSI
FormatA4
DeliveryYes
Pages34
File Size505 KB
Price£206.00


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