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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
Electrical conductivity: metallic materials. Reference material, 2 MS/m to 60 MS/m
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.7
Eddy-current measurement, AC bridge
Frequency: 10 kHz to 100 kHz
Approved on 06 August 2013
Internal NMI service identifier: 509
 
Electrical conductivity: metallic materials. Instrument, 2 MS/m to 60 MS/m
Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 0.7
AC comparison with reference material
Frequency: 60 kHz
Approved on 06 August 2013
Internal NMI service identifier: 510,1