GB/T 47330-2026 Pending National standards

GB/T 47330-2026 Plastics—Determination of specific aerobic biodegradation rate of solid plastic materials and disappearance time(DT50) under mesophilic laboratory test conditions

Publish Date: 2026-03-31 Implement Date: 2026-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 47330-2026

Standard Type: National standards

Standard Status: Pending

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Plastic Composite

Publish Date: 2026-03-31

Implement Date: 2026-10-01

Pages: 20 pages

Scope

This document specifies the measurement method for the specific aerobic biodegradation rate of solid, non-water-soluble plastic materials under moderate temperature conditions.
Note 1: The specific aerobic biodegradation rate (strictly speaking, the mineralization rate, which means evaluating the conversion of organic carbon to CO2 but ignoring the formation of biomass) is expressed as the amount of carbon mineralized into CO2 per unit area per unit time.
The method described in this document does not provide information on the final aerobic biodegradability of the test samples. For testing methods on the biodegradation ability of plastic materials under moderate temperature conditions, please refer to relevant standards such as ISO 23517 and ISO 22403. Only when the plastic materials are proven to be inherently biodegradable using appropriate standards (such as ISO 23517 and ISO 22403) can the method described in this document be used to determine the DT50. Additionally, for plastic materials whose final biodegradability has not been confirmed, the measured biodegradation rate should not be regarded as the inherent characteristic of the material as a whole.
This document only considers the release of CO2 to directly measure the mineralization of the test samples.
The method described in this document can also be applied to solid materials used as references.
This document is not applicable to the "marine, soil, and freshwater biodegradation" claims of biodegradable plastic materials. For this, please refer to the relevant product standards (if available).
Note 2: Although the results may indicate that the tested plastic materials and polymers will biodegrade at a certain specific aerobic biodegradation rate or DT50 under the specified test conditions, any results issued by the laboratory are not directly applicable to actual use sites or leakage locations such as soil, marine environments, and lakes.