BS EN ISO 14855-2-2009 塑料材料在受控堆肥条件下最终需氧生物降解性的测定.释放二氧化碳分析法.第2部分:实验室规模试验中释放二氧化碳的比重测量(ISO 14855-2-2007,包括Cor 1-2009)
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 laboratoryscale
test (ISO
This part of ISO 14855 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 micro-organisms present in the
inoculum.
If the test material inhibits micro-organisms in the inoculum, another type of mature compost or pre-exposure
compost can be used.