Norm

NEN-EN-ISO 17556:2011 Ontw. en

Bepaling van de totale aerobe bio-afbreekbaarheid in de bodem door het meten van het zuurstofverbruik in een respirometer van het gehalte van vrijgekomen kooldioxide

  • Deze norm is ingetrokken sinds 27-08-2012

31,83

Over deze norm

Status Ingetrokken
Aantal pagina's 32
Commissie Kunststoffen
Gepubliceerd op 01-05-2011
Taal Engels
This International Standard specifies a method for determining the ultimate aerobic biodegradability of plastic materials in soil by measuring the oxygen demand in a closed respirometer or the amount of carbon dioxide evolved. The test method is designed to yield an optimum degree of biodegradation by adjusting the humidity of the test soil. If a non-adapted soil is used as an inoculum, the test simulates the biodegradation processes which take place in a natural environment; if a pre-exposed soil is used, the method can be used to investigate the potential biodegradability of a test material. This method applies to the following materials: ? natural and/or synthetic polymers, copolymers or mixtures of these; ? plastic materials which contain additives such as plasticizers or colorants; ? water-soluble polymers; ? materials which, under the test conditions, do not inhibit the activity of the microorganisms present in the soil. Inhibitory effects can be measured using an inhibition control or by another suitable method. If the test material inhibits the microorganisms in the soil, a lower test material concentration, another type of soil or a pre-exposed soil can be used.

Details

ICS-code 83.080.01
Nederlandse titel Bepaling van de totale aerobe bio-afbreekbaarheid in de bodem door het meten van het zuurstofverbruik in een respirometer van het gehalte van vrijgekomen kooldioxide
Engelse titel Determination of the ultimate aerobic biodegradability of plastics materials in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved
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