NF EN ISO 17556

NF EN ISO 17556

July 2005
Standard Cancelled

Plastics - Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved

ISO 17556:2003 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 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 soil 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 (see e.g. ISO 8192). 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.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2005

Number of pages

25 p.

Reference

NF EN ISO 17556

ICS Codes

13.080.05   Examination of soils in general
83.080.01   Plastics in general

Classification index

T51-804

Print number

1 - 27/06/2005

International kinship

ISO 17556:2003

European kinship

EN ISO 17556:2004
Sumary
Plastics - Determination of the ultimate aerobic biodegradability in soil by measuring the oxygen demand in a respirometer or the amount of carbon dioxide evolved

ISO 17556:2003 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 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 soil 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:

  1. Natural and/or synthetic polymers, copolymers or mixtures of these.
  2. Plastic materials which contain additives such as plasticizers or colorants.
  3. Water-soluble polymers.
  4. 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 (see e.g. ISO 8192). 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.
Standard replaced by (1)
NF EN ISO 17556
September 2012
Standard Cancelled
Plastics - 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

<p>ISO 17556:2012 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 method is designed to yield an optimum degree of biodegradation by adjusting the humidity of the test soil.</p> <p>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.</p> <p>This method applies to the following materials:</p> <ul> <li>natural and/or synthetic polymers, copolymers or mixtures of these;</li> <li>plastic materials which contain additives such as plasticizers or colorants;</li> <li>water-soluble polymers.</li> </ul> <p>It does not necessarily apply to materials which, under the test conditions, 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.</p>

Table of contents
View the extract
  • 1
    Domaine d'application 1
  • 2
    Références normatives 1
  • 3
    Termes et définitions 2
  • 4
    Principe 3
  • 5
    Environnement d'essai 3
  • 6
    Réactifs 4
  • 7
    Appareillage 4
  • 8
    Mode opératoire 4
  • 9
    Calcul et expression des résultats 8
  • 10
    Validité des résultats 9
  • 11
    Rapport d'essai 10
  • Annexe A (informative) Principe du respiromètre manométrique
    11
  • Annexe B (informative) Exemple d'un système d'essai pour mesurer la teneur en dioxyde de carbone libéré
    12
  • Annexe C (informative) Exemples pour la détermination de la quantité de dioxyde de carbone libéré
    13
  • Annexe D (informative) Demande théorique en oxygène (DThO)
    15
  • Annexe E (informative) Exemple d'une détermination de la quantité résiduelle et de la masse moléculaire de polymères insolubles dans l'eau à la fin d'un essai de biodégradation
    16
  • Bibliographie
    17
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