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Interlaboratory Proficiency Test 02/2020 Alkalinity, conductivity, pH and nutrients in natural waters


ISBN (nid):ISBN 978-952-11-5165-1 
Julkaistu:2020 
Julkaisusarja ja numero:Suomen ympäristökeskuksen raportteja 17 /2020 
Kieli:englanti 
Kustantaja:Suomen ympäristökeskus 
Sidosasu:pehmeäkantinen 
Sivumäärä:78 
Tekijät:Riitta Koivikko, Mirja Leivuori, Mika Sarkkinen, Keijo Tervonen, Sari Lanteri, Ritva Väisänen and Markku Ilmakunnas 

48.00 €

Proftest SYKE carried out proficiency test (PT) for analysis of alkalinity, conductivity, nutrients and pH in natural waters in February 2020. In total, there were 31 participants in the PT. Either the calculated concentration or the robust mean or the median of the reported results was used as the assigned value for the measurands. The overall performance of the participants was evaluated by using z scores. In this proficiency test 89 % of the results evaluated with z scores were satisfactory when total deviation of 0.2 pH units for pH values and 5–25 % for the other determinations was accepted from the assigned value. Warm thanks to all the participants in this proficiency test!


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