Determination of the ultimate aerobic biodegradability of plastic materials under controlled composting conditions — Method by analysis of evolved carbon dioxide — Part 2: Gravimetric measurement of carbon dioxide evolved in a laboratory-scale test
This document specifies a method for determining the ultimate aerobic biodegradability of plastic materials under controlled composting conditions by gravimetric measurement of the amount of carbon dioxide evolved. The method is designed to yield an optimum rate of biodegradation by adjusting the humidity, aeration and temperature of the composting vessel.
The method applies to the following materials:
— natural and/or synthetic polymers and copolymers, and mixtures of these;
— plastic materials that contain additives such as plasticizers or colorants;
— water-soluble polymers;
— materials that, under the test conditions, do not inhibit the activity of microorganisms present in the inoculum.
NOTE If the test material inhibits microorganisms in the inoculum, another type of mature compost or pre-exposure compost can be used.
Određivanje krajnje aerobne biorazgradivosti plastičnih materijala u kontrolisanim uslovima kompostiranja – Metoda analize nastalog ugljen-dioksida – Deo 2: Gravimetrijsko merenje nastalog ugljen-dioksida pri ispitivanju u laboratorijskim uslovima
50.20Početak postupka odobravanja definitivnog teksta nacrta standarda
