Join the online event “Discussion Forum on the Validity/Validation of Sampling Procedures”

Eurachem and EUROLAB have jointly established a Task Group with the aim of giving better guidance on how validity of sampling procedures preceding chemical analysis in a laboratory can be improved – possibly through some kind of validation procedure, whether that will include the entire measurement process (from sampling to final test report) or just the sampling (and sample handling) taking place outside the laboratory. The basis for work in the Task Group is the two existing Eurachem guides “The Fitness for Purpose of Analytical Methods: A Laboratory Guide to Method Validation and Related Topics” and “Measurement uncertainty arising from sampling” (both free for download from https://www.eurachem.org/)


At this open event, we invite everybody with an interest/experience in the field of taking primary samples for the purpose of having them tested in an analytical laboratory to contribute with their views on the subject.


After brief introductory notes by members of the Task Group, all participants will be invited to give their opinion on (and discuss) the following issues/questions:


  1. Do you mostly see sampling as a process integrated with the final laboratory analysis (i.e., as a combined measurement process – from sampling to final reporting of test result) – or as a “stand-alone” process separated from the subsequent analysis in the lab.? Who are typically the person(s) responsible for the sampling in the “stand-alone” situations (including packing and transportation to the lab.)?

  2. Can you assume that, following a given standard procedure for sampling ensures the validity of a sample for subsequent testing? I.e., ensuring the sample being fit for the purpose of analysing it in the lab., giving valid test results?

  3. What factors could influence the validity of a sample? For a given sampling procedure, which effects might it have on the subsequent testing and on the validity of the final test result?

  4. What should, in your opinion, be the minimum requirements for education of samplers?

  5. How do you see the cooperation/communication between the person(s) responsible for the sampling and the laboratory?

  6. Do you have any suggestions for method(s) for estimation of the measurement uncertainty on a final test result stemming from the sampling part of the entire process (as it is required in the standard ISO/IEC 17025, used as basis for accreditation of laboratories)?

  7. Do you see ‘in situ’ measurements (where no physical sample is removed) as a suitable alternative to the “traditional” approach of sampling in the field + testing in a laboratory?


Registration must be done by 29 April 2022 at the following link: https://forms.gle/DhU3qgnbAXiFUdyRA

All registered participants will receive an e-mail with the link to the online platform (Zoom).


We are looking very much forward to seeing you on May 4 and listening to your perspectives on the important subject of sampling for chemical analysis.

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