1 Ocak 2019 Dergi makalesi Açık Erişim

Uysal, Emrah; Liv, Lokman; Akcadag, Fatma

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    <subfield code="a">According to ISO 17025:2017, the testing laboratories are required to confirm the measurement accuracy with proficiency testings or international comparisons. For this purpose, the proficiency testings for pH and conductivity measurements in water and soil are organized by TUBITAK UME twice a year. In this study, the preparation and analysis of the samples according to BS EN ISO 10523:2012, ISO 7888:1985, ISO 10390:2005 and ISO 11265:1996 and the evaluation of the results according to ISO 17043:2010 were carried out. pH and electrolytic conductivity (EC) values were determined by a pH meter and a conductivity meter for this study. Based on the results of the participants, they have a chance to improve the accuracy and reliability of their measurement results as observing the performances of other laboratories.</subfield>
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