Resistance laboratories provide the measurement traceability for resistance as well as development and maintenance of national physical standards for resistance. The laboratories provides calibration measurements with capability  from 1 mΩ to 1 TΩ. The National Standard of Resistance is a 1 Ω and 10 kΩ resistors kept in an oil bath at temperature of 23°C ± 0.001°C. The reference standard resistor is calibrated at BIPM on a regular schedule and disseminate to other resistors by using the automated DCC bridge at range of 1 mΩ to 10 MΩ. Resistance values below 1Ω achieved by using Direct Current Comparator Bridge with a Range Extender. The system has ratios up to 1000:1 with the relative uncertainty of 10-6. The resistance values from above 10 MΩ are scaled up using a modified Wheatstone bridge by replacing Resistive arms with 2 DC Voltage. The resistance laboratories dissemination, capability and uncertainty are shown in following table and diagram respectively. 


DC Resistance

  • Low range - 1 mΩ to 100 m Ω

  • Medium range - 1 Ω to 10 M Ω

  • High range – 100 MΩ to 1 TΩ


Best Measurement Capability


    ±0.5 mΩ/Ω to ± 585 mΩ/Ω

                                                            1  Ω standard resistor

DC Current  Shunt

  • 1 A to 100 A


Best Measurement Capability 

:     ±   5 mA/A to ± 100 mA/A   


High Voltage

The high voltage and high current capabilities in the laboratory are described as follows:

Systems Parameter Capability Range Best Measurement Uncertainty (±)
Impulse high voltage Peak Voltage 50 kV - 500 kV 1.1%
Time 3.90%
AC high voltage AC high voltage 5 kV - 200 kV 0.66%
DC high voltage DC high voltage 5 kV - 150 kV 0.10%
> 150 kV - 270 kV 0.60%
Current Transformer Ratio Error Primary current: 5 A - 2000 A; Secondary current: 5 A 0.05%
Phase displacement 0.8'
Voltage Transformer Ratio Error Primary voltage: 3.3 kV - 11 kV; Secondary voltage: 110 V 0.05%
Phase displacement 0.8'


hv1 hv2 hv3


vaVibration Laboratory has developed high accuracy capability to support national vibration and shock measurement activities. The chart illustrates the traceability for vibration measurement in Malaysia.


vc The highest reference standard established is laboratory standard accelerometer B&K 8305 that is maintained using Laser Interferometry Calibration System. The frequency range is from 5 Hz to 10 kHz with the best uncertainty of 0.4%. 

Reference standard accelerometer B&K 8305




m1bMagnetics Laboratory has developed high accuracy capability to support national magnetics measurement activities. The chart illustrates the traceability for magnetics measurement in Malaysia.


Calibration of magnetic field measurement devices in the range of 0.1 mT to 20 mT performed in a Helmholtz coil.  An electromagnet used to generate DC magnetic fields and perform calibrations in the range of 100 mT to 1.6 T. AC magnetic flux density calibration is being offered in the range of 1 µT to 0.5 mT at 50Hz to 20 kHz. Calibration of fluxmeter is also provided in the range of 1 mWb to 10 Wb.


DC Helmholtz Coil 


AC Helmholtz Coil 

Fluxmeter Calibrator 


NMIM plays an important role in disseminating the traceability of measurement to the whole country based on the International System of Units. Just like other world standard laboratories, NMIM has great responsibility in ensuring the national metrology infrastructures meet and comply with the global measurement standards.

Get In Touch

National Metrology Institute of Malaysia (NMIM)
Lot PT 4803, Bandar Baru Salak Tinggi
43900 Sepang
Selangor Darul Ehsan

Email: ,

DID: +603 - 8778 1605

FAX: +603 - 8778 1616