4-Point Probe

The Micro and Nanotechnology Laboratory at the University of Oslo (UiO MiNaLab) is equipped with a Jandel RM3-AR 4-point probe test unit.

The 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make an accurate measurement of the sample resistivity. 4-point probes are also used to measure sheet resistance of thin films. An additional module is available to test the semiconductor type (n/p).

Instrument Features

  • Current source: 10 nA to 100 mA.
  • Probe head (different loads): 10 g – 30 g (low); 60 g – 150 g (high).
  • Probe spacing: 1.00 mm (needle to needle).
  • Tungsten carbide needles: 0.4 mm diameter (0.3 mm diameter for close spacing).


The 4-point probe is available for rent with or without an operator. Prices are in Norwegian kroner (NOK) excl. VAT. All prices are subject to change.

User Category Price without operator/hour Price with operator/hour
Academia 100 NOK 850 NOK
Start-up 125 NOK 1225 NOK
Industry 150 NOK 1250 NOK

The reduced fees for start-up companies are available for the first 24 months after start-up. Training costs are currently covered by NorFab.


Published May 3, 2021 11:09 PM - Last modified June 4, 2021 9:37 AM