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Interlaboratory Proficiency Test 03/2016 - Alkalinity, pH, nutrients and conductivity in natural waters
ISBN (pdf):978-952-11-4568-1 
Julkaistu:2016 
Julkaisusarja ja numero:Reports of the Finnish Environment Institute 18/2016 
Kieli:englanti 
Kustantaja:Finnish Environment Institute 
Saatavuus (pdf):http://hdl.handle.net/10138/161390 
Sivumäärä:74 
Tekijät:Mirja Leivuori, Riitta Koivikko, Teemu Näykki, Keijo Tervonen, Sari Lanteri, Ritva Väisänen and Markku Ilmakunnas 

48.00 €

Proftest SYKE carried out the proficiency test for the determination of alkalinity, pH, nutrients, and conductivity in natural waters in February 2016. In total, 32 laboratories participated in the proficiency test. Either the calculated concentration, the robust mean or the mean of the results reported by the participants was chosen to be the assigned value for the measurand. The performance of the participants was evaluated by using z scores. In this proficiency test 88 % of the results were satisfactory when in the pH determination 0.2 pH unit and in other determinations the deviation between 5–15 % from the assigned value was accepted. Warm thanks to all the participants of this proficiency test!

Takaisin