Interlaboratory test - GSR Quality Scheme - QuoData GmbH

GSR Quality Scheme

GSR Proficiency Tests

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. 

On behalf of the European Network of Forensic Science Institutes (ENFSI), international proficiency tests on identification of gunshot residue (GSR) have been analyzed for several years.


Since 2010 QuoData is independently realizing the organisation and analysis of annual proficiency tests of the GSR quality scheme. Thereby members of the ENFSI expert working group "Firearms/GSR" will support QuoData as an advisory board.


For accredited laboratories - that have to take part in an annual trace evidence proficiency test - this GSR quality scheme is especially important. At the moment, no equivalent GSR quality schemes are available for international proficiency testing. Results from former proficiency tests can be viewed in the archives.

GSR2021 - Current information

We are delighted that you are interested in participating in the 2021 GSR PT round.


The enrollment is possible until 30 April 2021. Sample shipment is currently still planned for 9 June 2021. We will keep you updated on any changes if necessary.


If you participated in the 2019 or 2020 GSR PT round, you can login and enroll here: If you have forgotten your password, you can request a new password to be sent to your registered email address at any time.

Otherwise, please fill in the online application form provided here: You will get an email with your login data and the link for enrollment. After successful enrollment, you will receive a confirmation email. Further information regarding online data entry will be sent together with the sample(s).


Samples for the 2021 GSR PT round will be sent via FedEx, as in previous years.


Reports will be sent out in September 2021.


Detailed information regarding the GSR2021 PT round is available in the “Call for Participation” document.

If you have any questions regarding the GSR PT scheme, please do not hesitate to contact us under



For all those interested in GSR we offer this link to participate for free in our webinars "Utilize your PT results" and "Determine measurement uncertainties":

Introductory information, available in different languages: 

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 2020 and the “standard GSR sample” offered by PLANO GmbH .

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.



                                                   Open online tool