Environmental degradability of plastics is a multifaceted complex process that is strongly influenced by the nature of the plastics as well as biotic and abiotic conditions to which they are exposed. In order to allow a controlled and comparable method of assessment of degradability a number of standards were developed that define the testing of degradability under closely monitored conditions mimicking the conditions of application. The standards also define the requirements that the results of degradation experiments performed according to a relevant set of prescriptions, must satisfy so that a material can be qualified as for example: biodegradable or compostable. The standard procedures are based on a solid scientific and technical basis so as to avoid any uncertainty. Most of the methodologies follow degradation through the evolution of CO2 or the use of oxygen, however, other methods such as the use of radiolabeled isotopes can also be used. There exist now a larger number of published standards that apply to EDP, issued from different international, regional or national standardization bodies. Despite their different source the majority of standards is very similar and to a large degree compatible. This fact has already been recognized by certification organizations that base their certification procedures on the standards, which have agreed on cross-recognition of certificates. A trend toward harmonization of standards and certificates can be expected to continue in the future to better serve the global markets. The number of standards is continuously changing to take into account the scientific advancements in the design and production of new materials and ever changing applications, which, on the other hand, may cause confusion and misunderstanding among decision makers and end-users.
Global initiatives, awareness and capacity building in EDPs standardization and certification focused on developing countries are also briefly surveyed.