Dear participants of the 12th Deposition and soil solution WRT 2023,

The automatic data evaluation based on the median values has been completed and cross-checked.

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 soon 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 .

Requalification documents must contain at least:

- reason for failing,

- measures against this error in future,

- printouts from the instruments,

- analysis date,

- reports from your equipment calibration,

- control charts,

- calculation coefficients, 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-...). Requalification is finally confirmed when the lab successfully participates in the next ringtest.

The second bottle for every sample that was sent in the sample box should be used for the requalification. Requalification is  possible by 07 April 2023.

Final results, encountered problems and the evaluation of the 12th WRT Interlaboratory Comparison  will be presented at the joint meeting of the EP’s and Working group on QAQC  in March 2023 in Vienna and at the next Meeting of the Heads of the Laboratory.

You can acces the requalification sheet here:

Requalification sheet 12th ringtest deposition / soil solution

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

Best regards,

Anna Kowalska

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