ISO 22404 standard

  • Home
  • ISO 22404 standard

Aerobic biodegradation of non-floating materials exposed to marine sediment 

ISO 22404:2019 test method is a simulation under laboratory conditions of the habitat found in sandy tidal zone that, in marine science, is called eulittoral zone. The conditions described in the method might not always correspond to the optimum conditions for the maximum degree of biodegradation to occur. The method is based on the determination of the evolved carbon dioxide and derives from ISO 19679. The testing medium is based on a sandy marine sediment laid in the bottom of a closed flask; the sediment is kept wet with natural sea water. The test material is preferably in the form of a powder. The carbon dioxide evolved during the microbial degradation is determined by a suitable analytical method. The level of biodegradation is determined by comparing the amount of carbon dioxide evolved with the theoretical amount and expressed in percentage. The test result is the maximum level of biodegradation, determined from the plateau phase of the biodegradation curve.

Please notice the aerobic biodegradation of non-floating materials exposed to marine sediment can also be analysed according to ISO 18830:2016 based on measurement of oxygen demand (BOD) which is the recommended method for BPC Blue with a simplified system configuration, higher measurement reliability and capacity.

Read more about ISO 22404 at iso.org. 

BPC Blue premium for anaerobic and aerobic biodegradability compostability analysis

– a novel tool for anaerobic and aerobic biodegradability assays

The BPC Blue is an advanced laboratory instrument meticulously engineered to determine the aerobic and anaerobic biodegradability of a wide range of biodegradable plastics and polymer materials under simulated environmental conditions. It adheres strictly to the most important ISO, European, and American standards for biodegradability evaluation in both aerobic and anaerobic settings. With its cutting-edge features, the BPC Blue ensures precise and reliable results. Its automatic operation and intuitive user-friendly design empower users of all levels to effortlessly conduct tests and obtain highly accurate data.


Contact our industry experts!