How does the liquid level detection work and what is the minimal detectable volume for the conductive tips of the BioRobot Universal?

Liquid level detection in the BioRobot Universal works as follows: The tips and probes function as liquid detectors and measure the change in capacitance when entering or leaving a liquid.

The minimal detectable volume of 0.9% sodium chloride in a tube, (diameter of tube = 16 mm) is 200 μl.

The minimal detectable volume of 0.9% sodium chloride in a 1.5 ml tube sitting in a metal block is 200 μl.