ISO 14852:2021现行
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium Method by analysis of evolved carbon dioxide
出版：International Organization for Standardization
专家解读视频
This document specifies a method, by measuring the amount of carbon dioxide evolved, for the determination of the degree of aerobic biodegradability of plastic materials, including those containing formulation additives. The test material is exposed in a synthetic medium under standardized laboratory conditions to an inoculum from activated sludge under aerobic conditions.The conditions used in this document do not necessarily correspond to the optimum conditions allowing maximum biodegradation to occur, but this test method is designed to measure the biodegradation of plastic materials and give an indication of their potential biodegradability.The method enables the assessment of the biodegradation to be improved by calculating a carbon balance (optional, see AnnexC).The method applies to the following materials: natural and/or synthetic polymers, copolymers or mixtures thereof; plastic materials which contain additives such as plasticizers, colorants or other compounds; water-soluble polymers; materials which, under the test conditions, do not inhibit the microorganisms present in the inoculum. Inhibitory effects can be determined using an inhibition control or by another appropriate method (see, for example, ISO8192[1]). If the test material is inhibitory to the inoculum, a lower test concentration, another inoculum or a pre-exposed inoculum can be used.
?NORM EN ISO 14852:2021 10 15 - Identical
NF EN ISO 14852:2021 - Identical
UNI EN ISO 14852:2021 - Identical
SN EN ISO 14852:2021 - Identical
I.S. EN ISO 14852:2021 - Identical
PN-EN ISO 14852:2021-12 - Identical
UNE-EN ISO 14852:2022 - Identical
