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Mexico, CENAM (Centro Nacional de Metrologia)
Complete CMCs in Electricity and Magnetism for Mexico (.PDF file)
Inductance: self inductance, low values. Fixed inductor, 100 µH
Relative expanded uncertainty (k = 2, level of confidence 95%) in mH/H: 0.60
Substitution using an LCR meter
Frequency: 1 kHz
Current: 30 mA
Approved on 28 April 2011
Internal NMI service identifier: CENAM/E009-010-01