ISO/IEC 17043:2023 Consultancy

Advanced Approach for Proficiency Testing Providers

What is ISO 17043?

ISO/IEC 17043 is the standard that proves the international reliability of institutions organizing Proficiency Testing (PT). This standard ensures not only the impartiality of the PT provider and its management system, but also the accuracy of the statistical methodologies.

Scope of Consulting

1. PT Program Design
   • Creation of Experiment Schemes: PT programs specific to different fields such as chemistry, biology, food, environment, calibration.
   • Sample Homogeneity & Stability: One of the most critical criteria in ISO 17043. Homogeneity tests (ANOVA, F-test) and stability studies (trend analysis).
2. Statistical Evaluation
   • Z-score Analysis: Objective measurement of the performance of participating laboratories.
   • Robust Mean Calculations (ISO 13528): Robust statistical approach that minimizes the effect of outliers.
   • Mandel h&k Tests: Interlaboratory and intralaboratory consistency analyses.
3. Impartiality and Confidentiality
   • Establishment of coding systems to conceal the identities of participating laboratories.
   • Assessment of PT provider impartiality risks (commercial dependence, conflict of interest, sponsor influence).
4. Risk Based Approach
   • Risk management plan for PT sample not arriving on time, participating laboratory not sending results, non-compliance of data in statistical analysis.
   • Corrective action procedures to be implemented in case of failure of participating laboratories.
5. Accreditation Body Expectations
   • Justification of statistical methods in the PT provider's ISO 17043 accreditation dossier.
   • Evidence files of homogeneity and stability studies.
   • Reports sent to participants are transparent, statistically accurate and understandable.

Sample Homogeneity Test Table

Compliance was ensured as there was no significant difference between the samples in the homogeneity test.

Within the scope of ISO 17043, stability studies are tested to see whether the samples sent retain their properties over a certain period of time. Below is the trend analysis of the values ​​measured in a 6-month period.

As seen from the graph, no significant change was observed in the sample values ​​in the 6-month period, which shows that compliance is achieved in terms of stability.

Conclusion

ISO 17043:2023 consultancy is not just a management system installation. Real value; The accuracy of statistical methodologies comes with a guarantee of sample homogeneity & stability, impartiality and reliability. Astor Mayer We aim not only to accredit PT providers, but also to make them an internationally preferred, reliable and sustainable proficiency testing centre.