GSR Proficiency Testing Scheme - ISO/IEC 17043 accredited
PT scheme on gunshot residues for forensic laboratories worldwide
Since 2010, quo data Gesellschaft für Qualitätsmanagement und Statistik mbH has independently organized and evaluated the annual rounds of the International Proficiency Testing Scheme for the Detection and Classification of Gunshot Residues (GSR Quality Scheme) on behalf of the European Network of Forensic Science Institutes (ENFSI).
Benefits of participating in the annual GSR PT rounds:
- advanced sample material that allows for a comprehensive performance of your results
- web-based tool for further internal quality control included
- actively supported by members of the ENFSI expert working group "Firearms/GSR"
- DIN EN ISO/IEC 17043:2010 accredited
DIN EN ISO/IEC 17043:2010 accreditation certificate and annex
Suggestions or complaints about the GSR PT schemeIn the GSR Quality Scheme, specific samples for the detection and classification of typical GSR particles (containing lead, barium and antimony) are prepared synthetically and shipped to the participants who use their laboratory-specific procedure for the automated detection of GSR particles via SEM/EDS according to ASTM E1588.
Since April 2022, this worldwide unique GSR Proficiency Testing Scheme by quo data Gesellschaft für Qualitätsmanagement und Statistik mbH has been accredited by the German accreditation body DAkkS according to DIN EN ISO/IEC 17043:2010.
The accreditation is valid for the scope listed in the annex of the accreditation certificate D‑EP‑21563-01-00. By means of this accreditation, quo data Gesellschaft für Qualitätsmanagement und Statistik mbH fulfils the requirements of ASTM E3255-21 Standard Practice.
The full scope of accreditation can be found in the DIN EN ISO/IEC 17043:2010 accreditation certificate and it's annex.
From the April 2016 Final Meeting of the international PT on Forensic Determination of Shooting Distance organized by QuoData and held at the QuoData head office in Dresden.
From the April 2016 Final Meeting of the international PT on Forensic Determination of Shooting Distance organized by QuoData and held at the QuoData head office in Dresden.
GSR2025 – Current information
The GSR2025 PT round was successfully completed. The final report of results as well as the individual certificates are now available to the participants electronically.
We would like to cordially thank all laboratories for their participation!
Pre-announcement of the GSR2026 PT round
Preparations for next year's PT round have already started, and we are planning to announce the GSR 2026 PT round by January 2026.
Participants of previous GSR PT rounds will be notified by email, so please check your incoming emails and spam folder for our notification.
If you have not yet participated in one of our PT schemes in forensics, but would like to take part – state-registered forensic science laboratories and all members of the European Network of Forensic Science Institutes (ENFSI) are welcome to apply for participation. Please fill in the online application form provided here:
https://forensics-pt.quodata.de/pt-participant/lab_applicant/add
Further forensic PTs organized by QuoData
As a forensic expert, you might also be interested in our new Proficiency Testing Scheme for the Estimation of Shooting Distance by Chemographical Coloring. Please visit our SDD Proficiency Testing Scheme website for more information.
If you have any questions regarding one of our PT schemes in forensics, please do not hesitate to contact us using the following email address: forensics-pt@quodata.de.
Online GSR QC Analysis Tool
This web tool enables the automatic evaluation of uploaded quality control measurements of GSR PT samples from the years 2010 to 2025 and the "standard GSR sample".
Once you have imported your data a comprehensive PDF report is created as well as a dynamic chart which provides various selection criteria for a specific evaluation.