10th Deposition and soil solution Working Ring Test 2020

Dear participants of the 10th Deposition and soil solution WRT 2020,

The automatic data evaluation based on the median values has been completed and cross-checked. In total 37 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 at http://icp-forests.net/group/qualityinlaboratories/page/deposition-... 

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 A.Kowalska@ibles.waw.pl . The information should contain written information, reason for failing, measures against this error in future, printouts from the instruments, 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 webpage of ringtest information (http://icp-forests.net/group/qualityinlaboratories/page/deposition-... ).

The second bottle for every sample that was sent in the sample box should be used for the requalification. 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 05 August 2020.

Final results, encountered problems and the evaluation of the 10th WRT Interlaboratory Comparison  will be presented at the next joint meeting of the EP’s and Working group on QAQC  and at the Meeting of the Heads of the Laboratory.

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

Best regards,

Anna Kowalska



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