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Interlaboratory Proficiency Test 01/2018 - swimming pool water analysis
Julkaistu:2018 
Julkaisusarja ja numero:10/2018 
Kieli:englanti 
Kustantaja:Suomen ympäristökeskus 
Sidosasu:pehmeäkantinen 
Sivumäärä:56 
Tekijät:Mirja Leivuori, Sami Tyrväinen, Mika Sarkkinen, Riitta Koivikko, Keijo Tervonen, Sari Lanteri, Ritva Väisänen and Markku Ilmakunnas 

48.00 €

Proftest SYKE carried out the proficiency test for the determination of chlorine, KMnO4, NO3, pH, turbidity, and urea in swimming pool waters in January-February 2018. In total, 23 participants joined in the proficiency test. The calculated value, the robust mean or the median of the results reported by the participants was chosen as the assigned value for the concentration of measurands. The performance of the participants was evaluated by using z scores. In this proficiency test 92 % of the results were satisfactory when deviation of 0.2 pH units for pH determination and 8–30 % for the other determinations was accepted from the assigned value. Warm thanks to all the participants of this proficiency test!


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