This document 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 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.
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.
Označení | ČSN EN ISO 17556 (640513) |
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Katalogové číslo | 508423 |
Cena | 440 Kč440 |
Datum schválení | 1. 12. 2019 |
Datum účinnosti | 1. 1. 2020 |
Jazyk | angličtina (obsahuje pouze anglický originál) |
Počet stran | 40 stran formátu A4 |
EAN kód | 8596135084234 |
Tato norma nahradila | ČSN EN ISO 17556 (640513) z ledna 2013 |
Dostupnost | skladem (tisk na počkání) |