Interlaboratory Proficiency Test 02/2017 - Chlorophyll a, colour, conductivity, nutrients, pH and turbidity in natural waters

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Title: Interlaboratory Proficiency Test 02/2017 - Chlorophyll a, colour, conductivity, nutrients, pH and turbidity in natural waters
Author: Leivuori, Mirja; Koivikko, Riitta; Sarkkinen, Mika; Tervonen, Keijo; Lanteri, Sari; Väisänen, Ritva; Ilmakunnas, Markku
Publisher: Finnish Environment Institute
Date: 2017
Belongs to series: Reports of the Finnish Environment Institute 14/2017
ISBN: 978-952-11-4686-2
ISSN: 1796-1726
URI: http://hdl.handle.net/10138/185256
Abstract: Proftest SYKE carried out the proficiency test for the determination of chlorophyll a, colour, conductivity, nutrients, pH and turbidity in natural waters in February 2017. In total, 33 participants joined 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 measurands. The performance of the participants was evaluated by using z scores. In this proficiency test 83 % of the results were satisfactory when the deviation 10–30 % and 0.2 pH units from the assigned value was accepted. Warm thanks to all the participants!
Subject: pätevyyskoe
Subject (ysa): laboratoriot
laboratoriotutkimus
pätevyys
luotettavuus
vesianalyysi


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