Plan, record and follow up participation in proficiency testing (PT) and other interlaboratory comparisons, as required by ISO/IEC 17025:2017 clause 7.7.2. Optionally compute a z-score or En number from your result and the scheme values. Records stay on this device and export to CSV or print.
Clause 7.7.2 of ISO/IEC 17025:2017 requires the laboratory to monitor its performance by comparison with other laboratories, where available and appropriate, through planned participation in proficiency testing and/or other interlaboratory comparisons. This register does not replace a documented monitoring programme or the investigation required when results fall outside predefined criteria (clause 7.7.3). Optional calculations: z = (x − X) / σ, and En = (x − X) / √(U_lab² + U_ref²), where x is the laboratory result, X the assigned or reference value, σ the standard deviation for proficiency assessment, and U the expanded uncertainties. These expressions are the usual forms set out in ISO 13528:2022 (Statistical methods for use in proficiency testing by interlaboratory comparison). Suggested interpretation, which you may override: |z| ≤ 2 satisfactory, 2 < |z| < 3 questionable, |z| ≥ 3 unsatisfactory; |En| ≤ 1 satisfactory, |En| > 1 unsatisfactory. ISO/IEC 17043:2023 sets requirements for PT providers; this tool does not assess a provider.
ISO/IEC 17025 Laboratory Kit — $129 — This tool is free and runs in your browser. Records stay on this device (localStorage) and are not sent to a server. For the full paid ISO/IEC 17025 Laboratory Kit ($129), open the product page. Related training: ISO/IEC 17025:2017 — competence of testing and calibration laboratories on AMAADOR Academy.
Open the Laboratory Kit ($129)AMAADOR Academy — ISO/IEC 17025 training