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International comparison of electrolytic conductivity between the DFM (Denmark), the NIST (USA), and the OMH (Hungary)

R H Shreiner, J Fuko, H Jensen, M Wandel and J Sørensen

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INTERNATIONAL COMPARISON

Electrolytic conductivity measurements at the Danish Institute of Fundamental Metrology (DFM), the United States National Institute of Standards and Technology (NIST), and the Hungarian National Office of Measures (OMH) were compared using solutions of potassium chloride in water with nominal conductivities of 10 mS/m, 100 mS/m, and 1 S/m at 25 °C. Each participant determined the conductivities of the solutions by the method of their choice and reported uncertainties that were calculated according to the Guide to the Expression of Uncertainty in Measurement of the International Organization for Standardization (ISO). Secondary methods were used. The values determined by each institute for all three solutions agree within the stated uncertainties reported by the participants.


PACS

72.20.-i Conductivity phenomena in semiconductors and insulators

06.20.Dk Measurement and error theory

06.20.F- Units and standards

Subjects

Condensed matter: electrical, magnetic and optical

Instrumentation and measurement

Semiconductors

Dates

Issue 6 (December 2001)



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