GPI certification at the heart of plastic pellet loss prevention
The prevention of industrial plastic pellet losses (GPI) is now a major environmental issue for industry. These pellets are essential raw materials used in the manufacture of many plastic products.
When accidentally released into the environment, they can become a significant source of microplastic pollution.
Aware of these challenges, Diehl Metering SAS has been engaged since January 2023 in a structured approach to preventing industrial plastic pellet losses in the environment. This approach complies with environmental regulatory obligations defined by French Decree No. 2021‑461 of April 16, 2021. This regulatory framework requires all sites handling GPI to implement robust measures to prevent the dispersion of plastic pellets on industrial sites.
GPI audit and renewal of AFNOR certification at the Saint‑Louis and Rixheim sites
As part of the renewal of its GPI certification, an audit was conducted in November 2025 by AFNOR Certification at the Saint‑Louis and Rixheim sites. This audit of plastic pellet loss prevention measures aimed to verify the compliance of facilities, procedures and the environmental management system implemented by Diehl Metering.
The audit confirms the strength of the organization and the maturity of existing practices in terms of:
- Accidental loss management,
- Pellet containment systems,
- Reduction of environmental impact.
Following the review of the audit report and the certification committee decision, the renewal of the GPI certificate was granted.
Three continuous improvement recommendations were also identified, relating to prevention of releases, traceability of accidental losses and public information.
Strengthened French and European regulatory compliance
The mandatory GPI certification under French Decree No. 2021‑461 of April 16, 2021 now represents a key regulatory foundation for industrial players. This regulation specifically aims to prevent microplastic pollution resulting from industrial plastic pellet losses.
Since November 2025, this framework has been complemented by Regulation (EU) 2025/2365 on the prevention of pellet losses, which extends these obligations to all economic operators within the European Union. This European regulation marks a major step forward in combating microplastic dispersion and strengthens the environmental responsibility of industrial stakeholders.
Diehl Metering’s long-term commitment to exemplary GPI management
The renewal of Diehl Metering’s GPI certification, following the AFNOR audit, illustrates a proactive and responsible approach to preventing industrial plastic pellet losses. This recognition confirms the company’s compliance with French and European regulatory requirements and fully aligns with its strategy for sustainable reduction of environmental impact and corporate social responsibility (CSR), both locally and across Europe.
FAQ – Prevention of plastic pellet losses
What is the GPI certification audit?
The audit of plastic pellet loss prevention measures (GPI certification audit) certifies that an industrial site complies with regulatory requirements aimed at preventing plastic pellet releases into the environment.
It covers the entire production chain, from raw material reception to processing.
Is GPI certification mandatory?
Yes, it is mandatory under French Decree No. 2021‑461 and reinforced by Regulation (EU) 2025/2365.
Which Diehl Metering sites are certified?
The Saint‑Louis and Rixheim sites are covered by the certification and the renewal audit.
What are the environmental benefits?
Reduced accidental losses, prevention of microplastics and improved transparency towards the public.
Where can I find Diehl Metering’s GPI certificate?
The GPI certificate is available on Diehl Metering’s website, as part of a transparency and public information approach.