20/30399391 DC - BS ISO 23977-2. Plastics. Determination of the aerobic biodegradation of plastic materials exposed to seawater. Part 2. Method by measuring the oxygen demand in closed respirometer

20/30399391 DC

BS ISO 23977-2. Plastics. Determination of the aerobic biodegradation of plastic materials exposed to seawater. Part 2. Method by measuring the oxygen demand in closed respirometer

Status : Current, Draft for public comment   Published : January 2020

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This proposal specifies a laboratory test method for determining the degree and rate of the aerobic biodegradation level of plastic materials. Biodegradation of plastic materials is determined by measuring the oxygen demand in a closed respirometer when exposed to seawater sampled from coastal areas under laboratory conditions.

The test is performed with either seawater only (“pelagic seawater test”) or with seawater to which little sediment was added (“suspended sediment seawater test”).

The pelagic seawater test simulates the conditions found in offshore areas with low water currents and low tidal movements, whereas the suspended sediment seawater test simulates conditions which might be found in coastal areas with stronger water currents and tidal movements.

The conditions described in this proposal may not always correspond to the optimum conditions for the maximum degree of biodegradation, but this test method is designed to give an indication of the potential biodegradability of plastic materials.

NOTE

This document is addressing plastic materials but can also be used for other materials.




Standard Number20/30399391 DC
TitleBS ISO 23977-2. Plastics. Determination of the aerobic biodegradation of plastic materials exposed to seawater. Part 2. Method by measuring the oxygen demand in closed respirometer
StatusCurrent, Draft for public comment
Publication Date27 January 2020
Normative References(Required to achieve compliance to this standard)ISO 5667-3, ISO 8245, ISO 10523, ISO 10210, ISO 14851, ISO 11261
Informative References(Provided for Information)ISO 14852, ISO 17556, ISO 14855-2, ISO/DIS 23977-1, ISO 15985, ISO 22404, ISO 13975, ISO 14855-1, ISO 18830, ISO 19679, ISO 14851, ISO 14853
International RelationshipsISO/DIS 23977-2
Draft Expiry Date14 March 2020
DescriptorsSeawater corrosion, Seawater, Plastic packaging materials, Plastics, Plastic analysis
ICS83.080.01
Title in FrenchTitre manque Partie 2: Titre manque
CommitteePRI/89
PublisherBSI
FormatA4
DeliveryYes
Pages20
File Size490 KB
NotesWarning: this draft is not current beyond its expiry date for comments.
Price£20.00


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