Dear participants of the 9th Deposition and soil solution WRT 2018/2019,

The automatic data evaluation based on the median values has been completed and cross-checked. In total 39 laboratories participated in the exercise.

You can check now the results and qualification report of your laboratory at http://bfw.ac.at/depo/ring_depo.login by entering your laboratory code and your password.

The report can be downloaded here:

WRT 2019/2020 - Report

From now on the requalification procedure starts for the failed parameters for all laboratories that participate in the ICP Forests program, i.e. you need to find the reason for the failed results. The laboratories which did not pass the ring-test have to reanalyze these samples/ parameters and return corrected or reanalyzed results and thorough explanations by email to Anna Kowalska. The information may contain written information and also reports from your equipment calibration, control chart etc. Please, use attached form for requalification report; save the report with your lab code in the file name. In all correspondence please use your Lab code. Good hints how to proceed with your requalification procedure can be found at the above-mentioned webpage of ringtest information.

For the requalification you have the second bottle for every sample that was sent in the sample box. In case you need additional sample material, you can request this by email, but you will be charged for the delivery costs. Requalification is possible till 28 February 2019.

Final results, encountered problems and the evaluation of the 9th WRT Interlaboratory Comparison will be presented at the joint meeting of the EP’s and Working group on QAQC (March 2019, Brussels, Belgium) and at the Meeting of the Heads of the Laboratory in autumn 2019 in Romania.

Thank you for your contribution and look forward to further co-operation,

Best regards,

Anna Kowalska

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