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Competency evaluation on electrolytic conductivity measurement in Indonesia by an unofficial bilateral comparison between RCChem-LIPI and NIMT

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Abstract

The Research Centre for Chemistry—Indonesian Institute of Sciences (RCChem-LIPI) organized an unofficial bilateral comparison on electrolytic conductivity with the Electrochemistry Laboratory—National Institute of Metrology Thailand (NIMT). The electrochemical laboratory RCChem-LIPI, as a Designated Institute for Chemical Metrology in Indonesia, started to develop the secondary method on electrolytic conductivity measurement in 2016. Therefore, the purpose of this unofficial bilateral comparison was to test the ability of RCChem-LIPI laboratory and see the capacity building progress in doing the conductivity measurement. There were two samples containing potassium chloride prepared by RCChem-LIPI, and both samples had the electrolytic conductivity value in the range of 1000 µS cm−1 to 20000 µS cm−1. The samples were sent to NIMT and then measured at the same time duration. The results were compared, analyzed and evaluated based on their assigned values. The assigned values were 15309 µS cm−1 and 6650 µS cm−1 for samples A and B, respectively. The deviation for each measurement result was determined, and the uncertainties were also calculated from the data reported by both laboratories. The data evaluation and analysis confirm that the measurement results for both participant laboratories were in agreement with the assigned value of this unofficial bilateral comparison.

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Acknowledgements

The authors thank to the Research Centre for Chemistry—Indonesian Institute of Sciences (RCChem-LIPI) for financial supporting this study under project “Competency Development Program.”

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Authors and Affiliations

  1. Research Centre for Metrology, Indonesian Institute of Sciences (LIPI), Kawasan PUSPIPTEK, Serpong, Tangerang Selatan, Banten, 15314, Indonesia

    Fransiska Sri Herwahyu Krismastuti, Ayu Hindayani & Nuryatini Hamim

  2. Research Centre for Chemistry, Indonesian Institute of Sciences (LIPI), Kawasan PUSPIPTEK, Serpong, Tangerang Selatan, Banten, 15314, Indonesia

    Sujarwo Sujarwo

  3. National Institute of Metrology (Thailand), 3/4-5 Moo 3 Klong 5 Klong Luang, Pathumthani, 12120, Thailand

    Nongluck Tangpaisarnkul & Wiphada Hongthani

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  1. Fransiska Sri Herwahyu Krismastuti
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  2. Sujarwo Sujarwo
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  3. Ayu Hindayani
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  4. Nuryatini Hamim
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  5. Nongluck Tangpaisarnkul
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  6. Wiphada Hongthani
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Correspondence to Fransiska Sri Herwahyu Krismastuti.

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Krismastuti, F.S.H., Sujarwo, S., Hindayani, A. et al. Competency evaluation on electrolytic conductivity measurement in Indonesia by an unofficial bilateral comparison between RCChem-LIPI and NIMT. Accred Qual Assur 24, 119–125 (2019). https://doi.org/10.1007/s00769-018-1360-6

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  • DOI: https://doi.org/10.1007/s00769-018-1360-6

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