Croatian Forest Research Institute
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The Soil Ringtest programme is running every third year. The normal schedule is:
When a lab did not qualify and did not make efforts to improve the data quality, ICP Forests PCC will send a letter to the National Focal Centre and inform them about the consequence that their data possibly cannot be used for evaluations on an European level.
The ringtest is financed with a participation fee and ringtest sample preparation from participants.
Please, keep in mind that submission of the monitoring results to the PCC database is only possible if your lab participated in the ring test for all submitted parameters. If you want to participate and you need a labcode or/and a password - please, contact Tamara Jakovljevic.
Webinterface for registration and data submisson
Parameters and evaluation limits
Status of the Re-qualification of the last test
10th Soil Ringtest 2021 (Requalification results)
2nd Soil Ringtest 1997 (included in the Annex A of the Forest Soil Condition report)
1st Soil physics ringtest 2010
Review of possible quality checks and other forms of assistance (Version 1, May 2008)
Excel file with instruction and example of control chart use
Internal Quality Control (Nordtest TR569)
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