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Survey Eurachem 2023

Survey on non-quantitative PT/EQA - 2023

Dear Colleague,

The evaluation of participants’ performance is a key issue of any proficiency testing (PT) or external quality assessment (EQA), and it is crucial that participants are assessed

fairly and consistently. However, whereas ISO/IEC 17043 and ISO 13528 deal extensively with this issue for the PT/EQAs concerned with quantitative measurements,

guidance related to qualitative and interpretative PT/EQA is limited. Eurachem* is currently organising a survey to collect information on the current practice applied by

PT/EQA providers for the evaluation of participants’ performance in qualitative and interpretative PT/EQA, with the aim to review current practices, identify elements for

harmonization and provide guidance on this issue. As a PT/EQA provider, you are invited to share with us your strategies for performance evaluation by completing this

questionnaire, so that your experience can be considered and become part of a larger picture of shared knowledge. The questionnaire could be completed at different

times by clicking "Resume later" on the top-right of the page and providing the required information. A summary of the survey results will be made available as soon as

possible to all those who take part. We would appreciate if you could provide us by email a copy of typical reports you send to participants for each type of PT

(or other documents sent to participants to interpret their assessment).

(*) Eurachem ( is a network of organisations in Europe aiming to promote measurement traceability and good quality practices in analytical sciences.

For any further information, please contact the PT WG Secretariat via the website 

Thank you for submitting your contribution by January 31st, 2024

The Eurachem PT working group




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