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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
Capacitance for low loss capacitors. Fused-silica standard capacitor, 1 pF to 100 pF
Relative expanded uncertainty (k = 2, level of confidence 95 %) in µF/F: 0.7 to 200
Coaxial bridge
Frequency: 20 Hz to 100 kHz
Approved on 06 August 2013
Internal NMI service identifier: 71
Uncertainty table
 
Capacitance for low loss capacitors. Fused-silica standard capacitor, 10 pF to 100 pF
Relative expanded uncertainty (k = 2, level of confidence 95 %) in µF/F: 0.09
Coaxial bridge
Frequency: 1.592 kHz
Approved on 07 February 2019